Now I found first relevant bit of information from http://qt-project.org/forums/viewthread/34706/#151753 That tries to say that even qtcreator 3.0 beta was too old for qt 5.2. I then went to download qtcreator 3.0.1 just to check if newer version would work for me. It does work fine on my system. I think that fix for this bug would be qtcreator upgrade to version 3.0. Pauli