--- a/UIPainter.st	Sat Jun 21 12:59:03 2014 +0200
+++ b/UIPainter.st	Tue Jun 24 12:37:33 2014 +0200
@@ -5014,6 +5014,10 @@
 setupCanvasAndSelectionPanel
     |topView galleryWindow icon|
 
+    painterView isOpen ifTrue:[
+        ^ self.
+    ].
+
     icon := Smalltalk imageFromFileNamed:'UIPainter.xbm' forClass:self class.
 
     topView := self window.