You're trying to check in your bin-debug directory into CVS
Since bin-debug is your output folder, it is marked in
Eclipse as a "derived" resource. These resources are typically
ignored by source control because they can be derived entirely from
the source code that *is* under source control. Thus it would be
redundant to place it under CVS, and it would add overhead since
any code change will also change bin-debug's contents.
So I would highly recommend leaving it out of CVS for this
reason. But if you really have a need to manage it under source
control, you should be able to do so using a CVS client outside of
Eclipse (the command line, WinCvs, etc.).