--- a/VersionDiffBrowser.st	Thu Jun 06 16:54:57 2013 +0200
+++ b/VersionDiffBrowser.st	Thu Jun 06 19:12:57 2013 +0200
@@ -1923,7 +1923,8 @@
                         packageOfMethodInChange := change package.
                         (packageOfMethodInChange notNil
                           and:[ packageOfMethodInChange ~= PackageId noProjectID
-                          and:[ packageOfMethodInChange ~= change changeClass package ]]) ifTrue:[
+                          and:[ change changeClass notNil 
+                                and:[ packageOfMethodInChange ~= change changeClass package ]]]) ifTrue:[
                             ignored := true
                         ].
 
@@ -2447,10 +2448,10 @@
 !VersionDiffBrowser class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libtool/VersionDiffBrowser.st,v 1.112 2013-03-23 11:37:08 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libtool/VersionDiffBrowser.st,v 1.113 2013-06-06 17:12:57 cg Exp $'
 !
 
 version_CVS
-    ^ '$Header: /cvs/stx/stx/libtool/VersionDiffBrowser.st,v 1.112 2013-03-23 11:37:08 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libtool/VersionDiffBrowser.st,v 1.113 2013-06-06 17:12:57 cg Exp $'
 ! !