dynamic link disrupt execution

I have a program that uses QT linked staticly and I tried to change it to be linked dynamicly with QT.
I rebuilt QT to create a QT dll. ( using CRT MutilThreaded DLL)
The QT dll seems to work OK with the example programs that are provided with QT.
But when I use the QT dll with my program it crashes immidiately.
with the following message dialog:

Quote:

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Runtime Error!
Program:
R6034
An application has made an attempt to load the C runtime library incorrectly.
Please contact the application's support team for more information.

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After that dialog is closed I get another dialog:

Quote:

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The application failed to initialize properly (0xc0000142). Click on OK to terminate the application.

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Any clues, any body?

A mixup in the support for multi-thread support perhaps?

It's not something you can mix and match, in particular you can't have something which requires MT depending on something which doesn't support MT.

Threaded wise it is OK, i.e. my app and all the libraries it uses and dlls are mutilthreaded.
But QT uses C Run Time DLL apposed to my application that uses C Run Time staticly linked. that's ok right?

I think you need to make them both use the same CRT.
The static and dynamic linked versions are not going to co-exist.