Make sure you backup your phone before upgrading the ROM

The first time I updated, a bunch of stuff was closing or stopping.

Flashed gapps and then it was getting different errors.

Tried downgrading and reflashing gapps, still errors.

Got rid of the errors by stopping Google Play Service. Didn't try upgrading it back to the latest ROM though. Don't really want to mess it up. Guess you are supposed to start over every time you upgrade custom ROMs.