Stefan, > >>> message: > >>> cvs [checkout aborted]: writing ..... invalid argument > >>> > >>> We use cvsnt 2.5.04 (Zen) Build 2471 and Wincvs. The message is coming from the server. You are running an old CVS server (eg: 1.11 or 1.12), please upgrade to CVSNT 2.5.03.2382 on the server. Regards, Arthur