Just like the title says, as soon as I popped a wornout bag into a bag opener, the world crashed. World crashes on load afterwards.

Here are the crash logs:
crash-2016-09-30_10.40.34-server.txt
crash-2016-09-30_10.42.11-server.txt

This was fixed in 2.1.3.

Apologies, on a second look through my mod folder I noticed i had not replaced the mod with the new version :'( sorry