Thank you for your answer. I now tried exactly the same I did with Windows XP with Windows Vista. And there everything is working fine.

Perhaps it is just a difference how the Makefile is generated. My problem is that I can't try now. I have one week of vacation and here at home I do not have a Windows XP.

End of next week I'll compare the Makefiles I have on Windows Vista and Windows XP and then I let you know.