Creator crashes after using QmlProfiler

uSteps to reproduce:

1. create/open Qt Quick 1 or Qt Quick 2 application, select a Qt5 kit and a Qt4 kit
2. start profiling
3. hit 'Stop' profiling
4. (check if application is still running - depends on which kit was used first: running with the first kit always can close the app by pushing stop, while the other kit can't)
5. switch the used kit to the other one
6. repeat steps 2-4 several times
7. close Creator

Creator crashes. (see attached crash log)