This has to be a settings issue. Even the Workbookisopen() function
from the link you provided is erroring out. I checked it on another
machine and it works fine...


And i'm an idiot. For the next guy that has this issue, go to Tools
=Options = General. Make sure that "Break on Every Error" is not
selected in the "Error Trapping" portion.

Thanks for your help everyone.

Regards,
Thedude