Another bug report from Jesper Reenburg:

"You use absolute paths in your references to the pre_apply hooks inside
the _darcs folder of the bridge repository. "

"[...] then it obviously breaks when you try to move it. And you don't
get that helpfull error messages from darcs? when that happens."

"I guess that the absolute paths are "problems" elsewhere in
configuration related files."

We do use absolute paths everywhere in darcs-bridge, I don't recall a
reason why I chose this way, but we should look into it. Also, if the
pre-hooks try and call a missing bridge hook (which has been moved, for
example), we should give a good error message.