This means that you or your friend are running an old version of the game. Make sure each of your games is up to date and that should allow you to get past this error.
Articles in this section
- Need to Report an Issue or Bug?
- Steam Public Beta FAQ
- [Xbox One] Doomsday Pack and Ultimate Edition Woes Resolved
- I Cannot Connect to Friends in Multiplayer
- All Plague Hearts defeated, but my Legacy mission will not start!
- My game crashes when I try to launch it!
- [PC] Helpful Information to Include In Your Submission
- Pack Cycling Feature Hiccups
- Update 23 - Known Issue: Lethal difficulty completion of certain achievements will not trigger.
- Builder Legacy Fixed!