After Effects keeps on crashing when I try to open a comp :(

Hello everyone,

First, I would like to start by saying that English isn't my first language so I apologise in advance for my grammar.

I have this problem since this morning : 

I have this project that contains several comps (I hope I'm using the right term). I can open most of them. But when I try to open a specific one (the most important one, at that) AE keeps on crashing and telling me that a copy of my project has been saved with another name on my folder (file attached) and then something about mutithreaded render report. So I tried to open the copy but it did the exact same thing (copying the project with another name on the folder). And I did it again and again and again but it still doesn't work. I restarted my computer, nothing. I tried to open it with a different versiosn of AE, still nothing.

I don't understand why it does that because 5 minutes before it started I could open the comp without any problem.

Does anyone knows how to solve this problem ? 

Thanks in adance !