Problems with threads and windows

[SkripT]

Hi, here's the backtrace as a result of a program crash:

Program received signal SIGSEGV, Segmentation fault.
[Switching to thread -277..........]
0x1012c44b in _size_of_stack_reserve__ ()

and the message from the program drwatson of windows is that the program has made an illegal acess to memory.
As I think, crashes as a result of an overload of the stack. I guess that's because I am working with some QImages at the same time and I think that could be better to define the images in dynamic memory. I will try it.