[Roland]

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Roland, I defer to your expertise... white-space problem, bug or feature? Worth posting for attention of AHK Chris?

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Well, it took a long time to find, but this was the problem: You had a space between the first 'WinExist' and the bracket:

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If ! WinExist ("blue_bar ahk_class AutoHotkeyGUI")

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This is definitely not a bug...

Looks like you somehow got rid of that space without realizing it was the problem and then blamed it all on an empty line? [img]/images/graemlins/smile.gif[/img]