There is no German version of SP1 for VFP 8.0, only English since VFP 8.0 is only available in English. The German user group site is where to go to obtain the German resource files for VFP 8.0 which they created, and which they support (not Microsoft).

The link for submitting bug reports for VFP can be found at http://msdn.microsoft.com/vfoxpro/support/default.aspx, which takes you to http://support.microsoft.com/default.aspx?scid=/support/vfoxpro/report/report.asp&sd=msdn