Do you get the same error when running plain `bzr diff -r N..M` on the same branch? I don't see what we do wrong here in QBzr, but the traceback points deep enough into bzrlib internals.
Do you get the same error when running plain `bzr diff -r N..M` on the same branch? I don't see what we do wrong here in QBzr, but the traceback points deep enough into bzrlib internals.