This is what happened.
I added few images and a shadow (with gaussian blur) but to keep messing with the blurr i had to save, close and open again. when I did so Illustrator told me, the file is too big try to open it again with 64 bits version, then opens the file but almost everything is missing.
Everything is in the file but i can't open it on my computer
Thanks to the dear sir Kytri i was able to open it and at least export as png on Inkscape but i need to be able to work on ilustrator with that file