I am a newbie who is trying to use the QT creator, I installed the latest version "qt-win-opensource-4.5.1-mingw". Everything was working fine except for launching the QT Designer .. I don't really know what is the exact problem .. but whenever I try to edit my project visually or even to launch the QT Designer itself, the windows pops up an error message in which it mentions "designer.exe has stopped working".
I tried to debug with visual studio and the problem was in some steps for calling some DLL functions but I didnt really understand what was going on.