Comment 16 for bug 799990

> PATH also contain dir with system libraries - this would break modules depending on dll from C:\windows\system32, etc.
That's not quite right, system directories are searched before the path (http://msdn.microsoft.com/en-us/library/7d83bc18(v=vs.80).aspx), so that shouldn't be a problem.

> Karan, can you test if deleting PATH will help?
When I start OpenLP from the source, the problem doesn't occur, so I guess I'd have to make an .exe with PyInstaller to really test it. I tried removing PATH and all Qt environment variables in a command shell and then starting OpenLP from that shell, but it didn't work (still crashing), although Process Explorer showed that the variables really didn't exist for the OpenLP process.

> Could you please check if on your win 7 is set the environment variable QT_PLUGIN__PATH?
No, my only Qt variables are QTDIR, QT4DIR, QTDIR_DEBUG.