--- a/UIPainter.st	Sat May 22 09:12:13 1999 +0200
+++ b/UIPainter.st	Fri May 28 15:00:19 1999 +0200
@@ -3038,7 +3038,9 @@
 
         self setViewInLayoutTool:view spec:spec.
         spec class == DataSetSpec ifTrue:[
-            view columnDescriptors:(spec columns)
+            view notNil ifTrue:[
+                view columnDescriptors:(spec columns)
+            ]
         ].        
         self modifiedChannel value:false.
         modified := false