You've probably performed an update or checkout on a tag or specific revision (this changes Entries and makes the file "sticky"). After modifications to the file, users can't commit into the trunk/branch because CVS itself doesn't permit commits with sticky tags (sticky must first be reset). Under these circumstances, CVS allows you to commit only into branch tags (or main branch - trunk). The only thing that can be done is to merge your changes with the latest revision of the file from trunk/branch. This can be done by choosing:
...then using the trunk or branch tag to allow you to switch.
Applies to: NetBeans 6.x, 5.x