Hey! Sorry to hear the game crashes for you. Would you be willing to give a few details, such as whether you are running 1.7.2, or the experimental 1.8? And additionally, what your specs and in-game settings are?
I would try and update to 1.8 in that case, as that version has proved to be more stable and performant on some systems.
As of right now, that version only has one level which hasn't been artpassed yet, but this also increases performance and lifts the load that your PC will have to carry (Additionally, that level is designed a bit better in my own opinion)
Hope that helps, if not, then I am truly sorry!