So I've read lot of thread and I've understood that I've got problem with dll.
Usually when a DLL is missing the system will pop up a message telling you which DLL it could not find.
Since you are not getting this message, I think your problem is a segmentation fault and not a missing DLL.
Run your application in a debugger, and see which line crashes.
Post that part of code here, and we can try and help you further.