It appears that the issue started appearing in CVI version 8.1 and was resolved in version 8.5.1.355. Which version of CVI are you using, and are you able to upgrade to something newer?
i got the solution. actually problem was in stack size.my program stack was full with extra memory allocated to my variables and each time it was giving GPF at different addresses.one of those address was 001B:0040269A since i set my starting address at 00400000. so it was full after certain limit of functions called.
RobertoBozzolo gave me hint to look into map file and i got exact problem.
anyways thanks...
