Theodis

I just deleted the VintageStory files, unpacked the tar file again and it worked.  So I assume the game bugs out if you just try and overwrite the old server binaries and data.

A shame there are no replies to this yet.  I'm having the same issue.  Running Gentoo Linux on my server.

Prior to the game crashing with the error above I get a bunch of errors along the lines of.

14:01:55 [Server Error] Failed registering item game:helvehammerhead-iron: System.Exception: Attempted to register Item with code game:helvehammerhead-iron, but an item with such code already exists. Must use a unique code
  at Vintagestory.Server.ServerMain.RegisterItem (Vintagestory.API.Common.Item item) [0x0005b] in <c29bb51c062d406599d97705b6ec16ba>:0 
  at Vintagestory.Server.ServerCoreAPI.RegisterItem (Vintagestory.API.Common.Item item) [0x00000] in <c29bb51c062d406599d97705b6ec16ba>:0 
  at Vintagestory.ServerMods.NoObf.ModRegistryObjectTypeLoader.LoadItems () [0x0006a] in <22e1ae0330ec45ec95af9c2d665e4262>:0 

To make sure it wasn't an issue with old game data, I deleted my VintageStoryData folder and still get the same issue.