Problem Running Editor On OS X 10.10.1

[Stolas]

Ah, there was an update.
I really wish I was prompted first, given a choice.
I'm gathering that a 1.3 editor update is just speculation?
I would just roll back my os but I have other games that won't run if I do.
Of course, this is an old game.
I guess at this point they could just stop development and move on.

Is there a way to uninstall the latest update on the steam version?