--- a/Autoload.st	Tue Apr 01 13:12:07 2008 +0200
+++ b/Autoload.st	Tue Apr 01 13:19:28 2008 +0200
@@ -360,7 +360,7 @@
             do:[
                 Class classConventionViolationConfirmationQuerySignal answer:true
                 do:[
-                    classFilename asFilename isAbsolute ifTrue:[
+                    (classFilename notNil and:[classFilename asFilename isAbsolute]) ifTrue:[
                         "/ if filename is absolute, the autoload-class was created by an
                         "/ explicit install-as-autoloaded via the fileBrowser.
                         Smalltalk fileIn:classFilename lazy:false silent:nil.
@@ -913,7 +913,7 @@
 !Autoload class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libbasic/Autoload.st,v 1.144 2008-04-01 11:12:07 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libbasic/Autoload.st,v 1.145 2008-04-01 11:19:28 cg Exp $'
 ! !
 
 Autoload initialize!