it would be better to see the code from application where your problem appears, and you are showing code from some application not connected with problem... and I think it's rather just-in-time debugger or something like that which is caused by some error in your application - "segmentation fault" would be my guess, probably you're returning pointer to no more existing data or something like that. Can you show us the code? And try to use debbuger to see where the error occurs - much faster then asking us to resolve problem which is exactly that what debbuger should find in a blink of an eye.