This evening's release of RBTools 0.6.2 fixes several bugs throughout rbt post and rbt patch.
Mercurial users will find that rbt patch now behaves as expected especially for Git diffs. No need to manually fetch and patch by hand anymore.
We've fixed some breakages that users hit with error messages coming from Review Board under certain conditions, and some compatibility issues with Perforce, ClearCase, and Git.
See the release notes for the full list of changes.