I got this error at loading the game (latest experimental 0.17):
Look at my Twitter account: https://twitter.com/Heinzchen1

Are you on the latest version of reverse factory? Because the version before the one I just released has no code on line 223 (just an "end"). If not, I would recommend updating to the latest version to see if you still get that error, since I recently fixed a number of similar bugs, and would definitely like to know if I missed one.

I think it wasn't the latest Version. Today I'm back from hollydays and updated all mods . Now it works.

Great, glad to hear it!