OK, I seem to have gotten it working but I don't really know what I did. I swapped out the version of try I'm using (and I still don't know why that would have an effect), but that didn't entirely solve the problem. And then messing around and putting stuff back as it was seems to have done the job. Thanks, guys, for pointing me the the right directions.

EDIT

I'm an idiot. I accidentally deleted the line that was telling me there was an error, so it looked like it was working.