linking works with windows Dll, but access violations occur

[OK]

Hello,

I followed the recommended threads on linking windows Dlls
Using the described tool "coffimplib" I was able to link to executables.

However, sometimes when using function from the windows library I get :
object.Error: Access Violation
during execution.
Is this problem known to someone and is there some standard solution
(I guess not :()

Best regards, Oliver