|I have no problem "opening" the document.|
If "Dokuments" isn't a typo, then I assume you're using the German version of Windows?
Why does it stop in the first place, only to continue on F8?
It stops because it can't open the workbook, "C:\Dokuments\JLB\Web-Site\Members_None.xls." If it does open the workbook when you press F8, then something was blocking Excel from opening the workbook, but the file lock is released by the time of your manual intervention. Does some other macro open/close the workbook? Does this macro run just before this one?