I wanted to update my block (contrib/plugins/blocks/online_users_map) so that it worked with Moodle 2, so I'd like to create a branch for doing this work on as the changes won't be backwards compatible with Moodle 1.9.

When I try to create a branch (in Eclipse 3.2, using Team->Branch) the branching fails and I get the message (in CVS console):

"We've disabled some manipulation of tags and branches in Moodle CVS. If you are trying to move a MERGED tag, make sure you use the -F option. If you need to move a branch or create any new ones, please file a request in the bug tracker and make sure Martin Dougiamas sees it.
cvs tag: Pre-tag check failed"

Please would you create a new branch for me for the block 'online_users_map' in contrib so I can do the updates to get the block to work for Moodle2. Alternatively let me know if there is another way I should be doing this.

Thanks for your help,
Alex