Comment 1 for bug 578331

We are seeing this in our log files as well with the following error message:

2010-05-08 03:59:11 INFO Exporting widelands trunk series.
2010-05-08 03:59:59 ERROR Failure: ConcurrentUpdateError('Branch has been changed. Not committing.',)

This is likely related to branch-scanner problems just before the latest Launchpad rollout. It seems there are a bunch of branches which have remained in the "updating branch" state. Quick workaround for you should be to just push a dummy revision (try using "bzr commit --unchanged" in that branch and then pushing it back to LP), but it's definitely something for our code guys to look into.

Example branches are lp:~sirver/widelands/translations, lp:~walmis/blueman/po, lp:~menesis/schooltool.intervention/translations and so forth (we've got around 30 branches that we are trying to export to that exhibit the same problem). None of them have been changed since something like 2010-05-05.