--- a/ProjectDefinition.st	Wed Oct 04 15:41:00 2006 +0200
+++ b/ProjectDefinition.st	Wed Oct 04 16:32:35 2006 +0200
@@ -820,7 +820,7 @@
     ].
 
     preRequisites removeAll: self excludedFromPreRequisites.
-    preRequisites remove:self package.
+    preRequisites remove:self package ifAbsent:[].
 
     ^ String streamContents:[:s |
         s nextPutLine:'preRequisites'.
@@ -841,7 +841,7 @@
 
     "Modified: / 08-08-2006 / 19:24:34 / fm"
     "Created: / 17-08-2006 / 21:28:09 / cg"
-    "Modified: / 21-09-2006 / 17:37:28 / cg"
+    "Modified: / 04-10-2006 / 16:09:17 / cg"
 !
 
 productName_code
@@ -3245,7 +3245,7 @@
 !ProjectDefinition class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libbasic/ProjectDefinition.st,v 1.85 2006-09-29 21:48:42 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libbasic/ProjectDefinition.st,v 1.86 2006-10-04 14:32:35 cg Exp $'
 ! !
 
 ProjectDefinition initialize!