'Roblox needs to quit, we're sorry' on opening animation editor on a specific character

So basically, I went to work on my game again and wanted to continue animating a character. However whenever I opened the animation editor and selected the character Roblox Studio crashed saying ‘Roblox needs to quit, we’re sorry!’ It only happens to that specific character which it did work on before. Now it doesn’t and I have no clue why. I reinstalled studio but yet didn’t work. I edited nothing to the character and it just doesn’t work anymore.