Debug Assertion failed!!!

I am working with VC5++ and NT4/WS.
When I try to excecute my program I got the error message that the debug assertion falied. and
program: .../myprog.exe
file:winocc.cpp
line:305
I am not sure if there is a link, but when I start executing my program,I got warnings which says "no matching symbolic information found.". there warnings are for several dlls.
Please help me

Thanks,
Alon
oak022097Asked:
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chensuCommented:
The warnings mean that those dlls are not debug version. They have nothing to do with the assertion failure. From the assertion in winocc.cpp, I guess you are using an ActiveX control in your program. When the call ShowWindow() for the control occurs, the control window has not been created (it is not a window yet). You need to debug your program.
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