Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDdeleteObject.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDdeleteObject.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDdeleteObject.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.misc;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -39,5 +38,5 @@
 			objectName = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 		boolean deleted = GlobalDataContainer.getInstance().removeData(
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDload.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDload.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDload.java	(revision 766)
@@ -4,5 +4,4 @@
 import java.io.IOException;
 import java.io.ObjectInputStream;
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -32,5 +31,5 @@
 			filename = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDloadObject.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDloadObject.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDloadObject.java	(revision 766)
@@ -4,5 +4,4 @@
 import java.io.IOException;
 import java.io.ObjectInputStream;
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -36,5 +35,5 @@
 			objectName = (String) parameters.get(1);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDsave.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDsave.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDsave.java	(revision 766)
@@ -4,5 +4,4 @@
 import java.io.IOException;
 import java.io.ObjectOutputStream;
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -32,5 +31,5 @@
 			filename = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDsaveObject.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDsaveObject.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDsaveObject.java	(revision 766)
@@ -4,5 +4,4 @@
 import java.io.IOException;
 import java.io.ObjectOutputStream;
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -36,5 +35,5 @@
 			objectName = (String) parameters.get(1);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDshowTimer.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDshowTimer.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDshowTimer.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.misc;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 import java.util.logging.Level;
@@ -31,5 +30,5 @@
 			timerName = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstartFileListener.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstartFileListener.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstartFileListener.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.misc;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -30,5 +29,5 @@
 			filename = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstartTimer.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstartTimer.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstartTimer.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.misc;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -29,5 +28,5 @@
 			timerName = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 		Long time = System.currentTimeMillis();
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstopFileListener.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstopFileListener.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/misc/CMDstopFileListener.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.misc;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -24,5 +23,5 @@
 			filename = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDcondenseMouseClicks.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDcondenseMouseClicks.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDcondenseMouseClicks.java	(revision 766)
@@ -2,5 +2,4 @@
 package de.ugoe.cs.quest.commands.sequences;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.LinkedList;
@@ -57,5 +56,5 @@
         }
         catch (Exception e) {
-            throw new InvalidParameterException("must provide a sequences name");
+            throw new IllegalArgumentException("must provide a sequences name");
         }
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDcorrectKeyInteractionTargets.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDcorrectKeyInteractionTargets.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDcorrectKeyInteractionTargets.java	(revision 766)
@@ -2,5 +2,4 @@
 package de.ugoe.cs.quest.commands.sequences;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.LinkedList;
@@ -57,5 +56,5 @@
         }
         catch (Exception e) {
-            throw new InvalidParameterException("must provide a sequences name");
+            throw new IllegalArgumentException("must provide a sequences name");
         }
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDdetectTextInputEvents.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDdetectTextInputEvents.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDdetectTextInputEvents.java	(revision 766)
@@ -2,5 +2,4 @@
 package de.ugoe.cs.quest.commands.sequences;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.LinkedList;
@@ -60,5 +59,5 @@
         }
         catch (Exception e) {
-            throw new InvalidParameterException("must provide a sequences name");
+            throw new IllegalArgumentException("must provide a sequences name");
         }
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDgenerateReplayfile.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDgenerateReplayfile.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDgenerateReplayfile.java	(revision 766)
@@ -5,5 +5,4 @@
 import java.io.IOException;
 import java.io.OutputStreamWriter;
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.List;
@@ -56,5 +55,5 @@
 			sequencesName = (String) parameters.get(1);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDsequenceStatistics.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDsequenceStatistics.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDsequenceStatistics.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.sequences;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.List;
@@ -38,5 +37,5 @@
 			sequencesName = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDsortKeyInteractions.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDsortKeyInteractions.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/sequences/CMDsortKeyInteractions.java	(revision 766)
@@ -2,5 +2,4 @@
 package de.ugoe.cs.quest.commands.sequences;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.LinkedList;
@@ -81,5 +80,5 @@
         }
         catch (Exception e) {
-            throw new InvalidParameterException("must provide a sequences name");
+            throw new IllegalArgumentException("must provide a sequences name");
         }
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usability/CMDevaluateUsability.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usability/CMDevaluateUsability.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usability/CMDevaluateUsability.java	(revision 766)
@@ -2,5 +2,4 @@
 package de.ugoe.cs.quest.commands.usability;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -53,5 +52,5 @@
         }
         catch (Exception e) {
-            throw new InvalidParameterException("must provide a task tree name");
+            throw new IllegalArgumentException("must provide a task tree name");
         }
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usability/CMDgenerateTaskTree.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usability/CMDgenerateTaskTree.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usability/CMDgenerateTaskTree.java	(revision 766)
@@ -2,5 +2,4 @@
 package de.ugoe.cs.quest.commands.usability;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.List;
@@ -56,5 +55,5 @@
         }
         catch (Exception e) {
-            throw new InvalidParameterException("must provide a sequences name");
+            throw new IllegalArgumentException("must provide a sequences name");
         }
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/AbstractTrainCommand.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/AbstractTrainCommand.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/AbstractTrainCommand.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.List;
@@ -67,5 +66,5 @@
 			handleAdditionalParameters(parameters);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDcalcCoverage.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDcalcCoverage.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDcalcCoverage.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.List;
@@ -45,5 +44,5 @@
 			maxLength = Integer.parseInt((String) parameters.get(4));
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDcalcEntropy.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDcalcEntropy.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDcalcEntropy.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -41,5 +40,5 @@
 			modelname = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDflattenModel.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDflattenModel.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDflattenModel.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -36,5 +35,5 @@
 			modelnameFOM = (String) parameters.get(1);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateFixedLengthSequences.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateFixedLengthSequences.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateFixedLengthSequences.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.List;
@@ -52,5 +51,5 @@
 			}
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateGreedy.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateGreedy.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateGreedy.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.Iterator;
@@ -63,5 +62,5 @@
 			}
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateHybrid.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateHybrid.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateHybrid.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.LinkedList;
@@ -47,5 +46,5 @@
 			}
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateRandomSequences.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateRandomSequences.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDgenerateRandomSequences.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.List;
@@ -51,5 +50,5 @@
 			}
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDlistSymbols.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDlistSymbols.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDlistSymbols.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.Arrays;
 import java.util.List;
@@ -37,5 +36,5 @@
 			}
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDmodelSize.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDmodelSize.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDmodelSize.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -31,5 +30,5 @@
 			modelname = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDprintDot.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDprintDot.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDprintDot.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -42,5 +41,5 @@
 			modelname = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDprintTrieDot.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDprintTrieDot.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDprintTrieDot.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -43,5 +42,5 @@
 			modelname = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDshowMarkovModel.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDshowMarkovModel.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDshowMarkovModel.java	(revision 766)
@@ -4,5 +4,4 @@
 import java.awt.Rectangle;
 import java.awt.Shape;
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -59,5 +58,5 @@
 			}
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDshowTrie.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDshowTrie.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDshowTrie.java	(revision 766)
@@ -4,5 +4,4 @@
 import java.awt.Rectangle;
 import java.awt.Shape;
-import java.security.InvalidParameterException;
 import java.util.List;
 
@@ -56,5 +55,5 @@
 			modelname = (String) parameters.get(0);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}
 
Index: trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDupdateModel.java
===================================================================
--- trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDupdateModel.java	(revision 765)
+++ trunk/quest-ui-core/src/main/java/de/ugoe/cs/quest/commands/usage/CMDupdateModel.java	(revision 766)
@@ -1,5 +1,4 @@
 package de.ugoe.cs.quest.commands.usage;
 
-import java.security.InvalidParameterException;
 import java.util.Collection;
 import java.util.List;
@@ -37,5 +36,5 @@
 			sequencesName = (String) parameters.get(1);
 		} catch (Exception e) {
-			throw new InvalidParameterException();
+			throw new IllegalArgumentException();
 		}