Hello everyone!
1.19.1 is almost ready for Testing Build release. As such save games will be broken for anyone using Testing Build. Don't know what Testing build is? Don't worry! You have to opt-into the Testing Build. So you're probably not on it.
If you'd like to switch to Testing Build visit: http://www.ventdev.com/forums/showthread.php?tid=2594&pid=6237#pid6237 for directions.
If you wish to continue your 1.19 save games and are on Testing Build, switch to the Default (none) build. It will remain on 1.19 for a couple more months. Directions are in the link above!