<div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Your local repository in 2a format (default in bzr 2.0+) but your remote repo in old format (pack-0.92 maybe). You can ask format of remote repo using command: bzr info -v ftp://... Upgrading local repo to 2a makes it incompatible with old (non-rich-roots) format. You should upgrade your remote repository. E.g. bzr upgrade ftp://... Ensure all your coworkers using bzr 2.0 or at least 1.17-1.18, otherwise they won't access new 2a format of repo. If ever I can't upgrade my remote repo, is it possible to downgrade the version of our workstation to fit in the format of the server? </blockquote></div>