--- a/dialogs/BlockPreviewDialog.py Mon Jun 10 00:55:57 2013 +0200
+++ b/dialogs/BlockPreviewDialog.py Mon Jun 10 01:15:39 2013 +0200
@@ -80,7 +80,8 @@
format = _("\"%s\" is a keyword. It can't be used!")
elif uppercase_block_name in self.Controller.GetProjectPouNames():
format = _("\"%s\" pou already exists!")
- elif (self.DefaultBlockName.upper() != uppercase_block_name and
+ elif ((self.DefaultBlockName is None or
+ self.DefaultBlockName.upper() != uppercase_block_name) and
uppercase_block_name in self.Controller.GetEditedElementVariables(
self.TagName)):
format = _("\"%s\" element for this pou already exists!")