Doesn't look like the MyM launcher as that is a custom title screen that isn't ours and it appears to be where the trouble lies.
I'm using the mym launcher and that crash-report is from right after doing a forced update. I don't think it's the launcher causing the problem. It turns out my pc is having the same kind of problem with vanilla minecraft. Oh well, for now I guess I'll just continue playing on my laptop, untill I can figure out the issue with my pc. Edit: It seems I am able to run crash landing without a problem.
That is really odd. The only thing I could think to do with this is reinstall java, and remove the custom main menu mod from the instance.
This appears to be some incompatibility with your graphics card. Please try to remove the custommainmenu mod and see if it is still happening.
I have decided to use my laptop for now till I can finish working on/upgrading my desktop. My plans include a better graphics card. For now, I guess I'll close the thread. Thank you for your help everyone.