diff -r 436268f31dae -r d16a8df4d322 PLCOpenEditor.py
--- a/PLCOpenEditor.py	Sun Dec 09 17:07:45 2007 +0100
+++ b/PLCOpenEditor.py	Sun Dec 09 17:14:14 2007 +0100
@@ -837,6 +837,7 @@
         event.Skip()
     
     def OnBlockTool(self, event):
+        self.ResetToolToggle(ID_PLCOPENEDITORTOOLBARBLOCK)
         selected = self.GetPageSelection()
         if selected != -1:
             self.GetPage(selected).SetMode(MODE_BLOCK)