Thanks for your advice. I solved the problem while trying it out, though the cause was something different.
It was very strange actually , what I did was to try diff the exe without custom window title to see if there was a problem with it.
It worked now, so I thought it was my problem too. Then I diffed the exe like I did before (many times before) with the same name and tested it to see if it
didn't work again. To my surprise, it worked now! But why? It made me little confused and I would like to know the cause if it happens again, but for now
I'm happy it works =). The old patched exes still dont work and I'm very sure that I used the exact same diff options.
Thanks again, I will report if I ever find the real cause behind this problem. If anyone else knows why, then I would be happy to know =)