Sorry to raise this zombie, but I have driven myself nuttier trying to implement this very simple code change.  I get nothing but indentation error messages when I try the original modification and the proposed modification.  I feel like my head is full of cotton and I'm not thinking clearly, but I'm sober, so that's a bit less likely than otherwise.

(And just to pour acid on my wounds, I just discovered that my own simplistic Shadow Camera Rename freebie now is flagged for syntax errors, so the syntax must have changed as well.  Python has got me in a stranglehold and is starting to squeeze.  I might as well be a dead parrot for all that I'm accomplishing.)