Hello everyone, this is weird, I try the following: -Use HFSLIP with most PostSP3 Fixes -use FDVFiles (needed some localisations for german) -version of sourcefiles is GRTMPFPP_DE -used FDVs syssetup.dll and setupapi.dll, no luck -patched like described (http://www.msfn.org/board/topic/163817-a-new-patch-to-edit-syssetupinf-without-any-error-messages/?p=1070787), no luck I always get these errors: error:Signature of Windows XP Professional Setup is invalid. error: fffffbda.Serious error:Setup failed to install the product catalogsDoes anyone have a clue? Are there german users of FDVfiles that got it working? Please help me, thanks.