--- a/smalltalk.rc	Thu May 03 16:25:45 2012 +0200
+++ b/smalltalk.rc	Tue May 08 21:36:16 2012 +0200
@@ -635,7 +635,7 @@
 	files do:[:each|
 	    | eachFile |
 
-	    (continue and:[(eachFile := each asFilename) exists]) ifTrue:[
+	    (continue and:[each notNil and:[(eachFile := each asFilename) exists]]) ifTrue:[
 		continue := false.
 		eachFile pathName infoPrintCR.
 		eachFile fileIn.