Conflict between main helpfile and context helpfile

Hello everybody,

I have a conflict between the main helpfile of my project and the context helpfile. The main helpfile is stored in CommonDialog1.HelpFile and is called by pressing F1 (standard). The context helpfile is stored in App.HelpFile and is called by pressing Shift+F1 (standard too, I think). Context help works very fine, but every time I call the main helpfile, the context help pops up for the current control. After a second, this popup window closes itself and the main helpfile will be opened. Can anybody help me with this. Maybe there is a mysterious property which wasn't set.

Best regards

Michael Hartmann