Quote Originally Posted by nateriver View Post
Try using Qt 4.6 (it seems that you are using qt 4.5), maybe mingw bundled with previous versions was incompatible with Windows Vista.
Also try compiling your project from command line. Launch Qt Command Prompt (should be somewhere in your Start menu), enter your project's directory (cd "C:/Users/Guido/Documents/Learning/"), run "qmake -spec win32-g++ -r CONFIG+=release" and "mingw32-make -f Makefile.Release". If that doesn't make any difference, try to run just "qmake" without any parameters, and then run make command (the same as before).
It works. Thank you.

But now how do I build the same project for the linux platform, without running qmake on linux?