cvLoadImage throws exception when used in a .NET Thread

hi

we are facing a weird problem

we have build an c++ application that works with .NET Thread;
using Visual Studio C++ .NET and using the last OpenCV release

the application starts a new thread;

in this thread we load and save an image;

now the problem:
from the moment the function of the main application is finished --
before the thread has finished -- we get an exception on cvLoadImage
or/and on cvSaveImage

if we keep the function alive (with a sleep) there is no problem, the
thread executes cvLoadImage and cvSaveImage and finish without problem

the exception is:
  null reference, object not set to an instance
and the exception occurs in the file: loadsave.cpp on the line 317:

GrFmtReader* CvImageFilters::FindReader( const char* filename ) const
{
    return m_factories->FindReader( filename ); //!!!!!
}

In debug we can see that m_factories has a valid pointer and filename
also contains the filename, no null reference ...

Can it be because m_factories is static and we call it in another Thread??

is there anyone who can help us out??  we are really stuck here and
have no idea how to solve this.

thanks
greetingz

wes





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