Thanks to the latest updates we can now copy and paste in the game(woooo!) which is a huge time saver for my fog emitter projects btw, but could also be great for color codes and biographies and such.
And it looks like the new update gave some of us problems with CAS. So if your game is getting stuck in the CAS process a quick fix is to "undo" and then "redo" and it should finally let you exit out. Sometimes you have to try more than once but it works every time for me.