Failing to play on my own server.

[JollyTeh]

Hi there. I've been wanting to make my own server to play with a friend for this modpack but it seems that everytime I attempt to enter the server I get this failure:

Registry remapping failed: Received ID map for minecraft:enchantment contains IDs unknown to the receiver!

• spectrum:disarming - spectrum:improved_critical.

  I had this issue running the server a few updates ago but somehow fixed it and now it came back. I did however attempt to reload the nether by deleting the file corresponding to it in the world folder if that has any correlation.

[thehobojoe]

Make sure that the server and the client both have the same Spectrum version, and the same spectrum config