Quote Originally Posted by jacek
Are you sure that your program worked with Qt 4.0.1? Maybe it was 4.0.0?

In Qt 4.0.1 there was a slight change in SLOT and SIGNAL macros:
Yes,I'm sure. The directory I use is called Qt 4.0.1 and I use the syntax that you wrote above. Moreover, the problem that I get doesn't come from a "connect" macro.