I was trying to edit a skin (and failed to, so I removed it), then I saw there was a "Press 'M' for Menu" in the skin picker menu.
When clicking once on the "debug mode" button, everything is ok.
If I click a second time to deactivate it, the game crashes.
Here is the crash report :
https://puu.sh/wEAv5/7eceea53f4.txt
Specs :
Win 10
Intel i7 6700
NVidia Geforce GTX 980M