2012/07/18 – The issue is back
2012/06/15 – This issue is fixed
Maintenance seems to have corrupted all (or most) files in the Exchange. Don’t use it for the moment. Old and new files are affected.
DO NOT DELETE YOUR STUFF! EA Should be able to fix it.
On top of that, all downloads only have numbers, not names.
This issue seems to only occur if you use save as. Downloading to the game directly works as intended.
Custard shows the downloads like this:
The files can’t be installed.
EA is aware and working on it. If you want to contribute something, please post in this thread: All files on exchange are corrupt.