Thanks a lot for the fast replay.
Everythink workes so good that till now i dind't "find out" how to debugg within visual build.
The Problem was that i had to reinstall a NEW license File for Installaware.
And Installaware "DID BAD" because they didn't show any Message and the Main-Programm did work as expected.
So thaks again - i am (sill or even more) happy again!
Oliver