StepReader::TransferRoot(int) Access Violation

Hi, I'm getting an Access Violation error,
when I try to load a very huge model.

Code :

int status = stepReader.ReadFile(path);

if(status==IFSelect_RetDone)
{
int nbr = stepReader.NbRootsForTransfer();

for(Standard_Integer n = 1; n stepReader.TransferRoot(n); // Here comes the acces violation!!!!
}

And I can see any more, because the TransferRoot methide is in the .DLL, so I have no chance to get,why I'm getting this error.
The 3D Model that is causing this error, is too big to be attached here.(Its size is 5,42MB compressed).
There is any alternatice to handle the access violation problem?
I know that try,catch wont work.