Paint Effects Crash

On some computers (like my Lenovo laptop) Maya crashes when using Paint Effects.
This is a threading-problem, aparently Maya only uses one thread and something goes wrong there.

Now, here’s the solution, or at least worked for med:

1) Open Mayas “.env-file” (my documents –> Maya –> 2014 x64) with notepad
2) write: MAYA_PAINT_EFFECTS_THREADS=1
3) Save and run Maya again.