I'm in a pickle. I'm using SVN 1.5 at Beanstalk and Tortoise SVN client 1.6.11 x64 on Windows 7.
I'm developing on a branch and have been merging changes from the Trunk into my branch at least once a week. I recently noticed some things weren't working as trunk changes didn't make it into my branch. When I try to do a merge, Tortoise acts as though there are no changes in the trunk to merge. The Test Merge shows no files being added or updated.
I tried to merge my branch back to the trunk, but got a message saying that my branch wasn't up to date and told me to merge a range of revisions from the trunk.
I really don't want to do this by hand. How can I tell Tortoise and/or SVN that my branch is not up to date?