using i driver with QT

Hi,

We are developing an application with QT and we need to use NI ivi driver in our application. 

the ".h" file is included to the project and the ".lib" file is linked to the project. We can compile and link the project without any error. Yet, when the crashes when we try to open the device with the following error:

     The inferior stopped because it triggered an exception.

   Stopped in thread 0 by: Exception at 0x754cc42d, code: 0x6d7363: C++

   exception, flags=0x1 (execution cannot be continued) (first chance).

What could be wrong? Do you have any Ideas_

regards\

ozgu