Yesterday everything was working fine, but since today I can't start Qgis anymore, because it crashes.
This affects all the versions that I have currently installed (2.8, 2.10. 2.12 and 2.14). The program loads and when it says "Starting Python", it crashes and writes a minidump (see screenshot below). QGis Browser launches normally.
What did I do yesterday: I used Grass (v.clean) and changed/cleared the folder paths for the plugin as explained in the answer to this question. Also I tried out something with a function in field calculator. But can all this cause all installed versions to crash at startup?
What could be causing this? Is there a way to manually fix this? I also tried a restart, but this didn't work. Edit: I use Windows 7 64-bit.