It's not a bug, the program stores a local cache of the svn's to prevent installing usless .svn folders and files that could possibly have an effect on loadtimes and other issues with garry's mod.

If you are doing a resinstall there is no reason to redownload, that was part of the program's idea.
The svn's are just waiting for you to reinstall them wherever, no redownloading 600mb of phx.

If you want to delete the local cache to save space or w/e, do this..

Just click on the svn and click the delete button:

- say you don't want to delete it
- it will then ask you if you want to delete the files anyway
- choose yes and redownload if you want

LOL i hope that will work when i download and install 

Can you give me the translated German files pl0x?
I had them on my laptop which is gone now. :/

sorry to sound nub but what dose this actually do (in detail).