Hi everybody, I solved my problem now - it seems that I also had mixed checkouts/updates with TortoiseSVN and command line svn :-(
I also solved the checkout problem with the command line version by temporarily disabling my virus scanner (Avira Antvir) .
Don't know why this happened and if it'll happen again, but currently it workes again and I'm happy :-) Thanks for your help! regards, Matthias
