ive had this problem for a while since i got the curse launcher and launched an ftb modpack, it screwed up minecraft on that and the normal one too.

Put the summary of the bug you're having here

What I expected to happen was for minecraft to launch as it did every other time

What actually happened was some error which i clearly cant fix

Steps to Reproduce:
1. im not entirely sure how, but what i picked up was opening the curse launcher and launching an ftb modpack which the computer didnt cope with well, causing it to crash
2. then i opened minecraft in the normal launcher, the one from the minecraft.net website and the same crash happened even though it isnt modded
3. i tried reinstalling and also deleting curse, but it keeps on coming