CVS Problem: ADD failes after last System update

After the last System update (YOU) CVS runs, but ist no longer possible to add files to a repository. The other commands work fine. Edit, Commit, Checkout etc. no Problem. We work with eclipse and IntelliJ Idea. Before the update anything worked fine. Could i have forgotten to start a specific service? Any Suggestions? Any help ? Any reference ? Thanks to all in advance Martin Meister