Today i tried to open the editor to fix some issues on one of my maps, but Portal 2 crased just after i try to open any of the maps of the editor.
I click on the map and it blocks during the "flipping panels" animation of the text.

What could be wrong? Currupted map files? Any fixes?
If I uninstall the game do my personal map files remain or they will be deleted?

Notes: single player works, it really seems only a problem of map. I verified cache integrity and it says that something is wrong, then it fixes it but game still not works.

That should fix it

First thing I've tried, doesn't work

It says that there is something wrong, it fixes it but then still not work.

have you tried to create a clean new test and load that?

If you tried that and it still fails attach the p2c file to this post.
To do this go to the full editor as a reply -> Next to options there's upload attachment click that and attach it! Then we can see if it's you/your pc or if it's something else

I wanted to create a clean room, but it crashes whan i press "Create test chamber".

Tese are the file p2c files in the folder.

p2c.rar

Edit: i've tried to remove the p2v from the folder, now I can play the maps but i still can't use the editor.

Reinstall?

Ok, somehow i've fixed the problem.

I moved the map files and then i deleted some files that could be related with the editor.
At first start Steam fixed the missing files and now it works...