Index: trunk/quest-plugin-mfc/src/main/java/de/ugoe/cs/quest/plugin/mfc/LogPreprocessor.java
===================================================================
--- trunk/quest-plugin-mfc/src/main/java/de/ugoe/cs/quest/plugin/mfc/LogPreprocessor.java	(revision 639)
+++ trunk/quest-plugin-mfc/src/main/java/de/ugoe/cs/quest/plugin/mfc/LogPreprocessor.java	(revision 641)
@@ -126,4 +126,5 @@
 		File folder = new File(path);
 		if (!folder.isDirectory()) {
+		    targetFile.close();
 			throw new IOException(path + " is not a directory");
 		}