This is just a really quick announcement for a hotfix: What crashed Level 01 was the combination of a specific Water system, an AMD GPU, Unity 5.4 and GPU skinning. What we have disabled now is GPU skinning.
This can have a severe effect on performance, so watch out - but bad performance is much better than starting the game and having your PC fully crash due to bugs in some drivers triggered by a game.
So that issue is history - hopefully, we'll soon have a fix from Unity with which we can activate GPU skinning again.
Sorry for any inconvenience you may have or have had due to this issue!