--- a/JavaCodeLibrary.st	Mon Nov 18 22:08:04 2013 +0000
+++ b/JavaCodeLibrary.st	Mon Nov 18 23:04:42 2013 +0000
@@ -120,11 +120,13 @@
 classPathOn:aStream
     "superclass JavaCodeLibraryOrBundle says that I am responsible to implement this method"
 
-    classes asFilename isReadable ifTrue:[
-        aStream nextPut: classes.
+    classes notNil ifTrue:[
+        classes asFilename isReadable ifTrue:[
+            aStream nextPut: classes.
+        ].
     ].
 
-    "Modified: / 12-01-2013 / 16:19:40 / Jan Vrany <jan.vrany@fit.cvut.cz>"
+    "Modified: / 18-11-2013 / 22:27:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"
 !
 
 sourcePathOn:aStream