Don't throw a weird exception if REDO_BASE isn't set.
Don't throw a weird exception if REDO_BASE isn't set.

dinkelk/redo-python,apenwarr/redo,dinkelk/redo-python,apenwarr/redo,rowhit/redo,pombredanne/redo,pombredanne/redo,rowhit/redo,dinkelk/redo-python,apenwarr/redo,rowhit/redo,apenwarr/redo,rowhit/redo,pombredanne/redo,pombredanne/redo,dinkelk/redo-python