Game Crash

Put the summary of the bug you're having here

What I expected to happen was...:
What i expected to happen was that i could play on minecraft with a high quality resource/texture pack.

What actually happened was...:
What actually happened was that my game crashed and wont let me open it again

Steps to Reproduce:
1. put a resource pack on that your computer cant handle
2. click done
3. then try to use it