How does one fix this? (sorry for bad picture)

[naive ridge]

Happens every time i try to play MP with friends, no matter the host. No mods used either.

[final osprey]

You can attempt to disable the lua checksum and/or anticheatchecksum to 0

Another method is to have all players unsub from all plugins they have and deleting the mods folder on the server.

I know you said you aren’t using any, but … that’s the usual process as far as I know.

[stable trout]

Delete the folder containing the file, then verify your game files

[fast plume]

I have same issuse with TsarLib, and deleting folder didnt help, especialy on linux

[stable trout]

You have a different issue, Linux has a specific bug with loading mods on servers, I suggest avoiding them when playing or hositng servers

[fast plume]

I would, but most active servers have some kind of mods. This server was only one that used mods i could play before update. There is no soulution to this you are saying?

[stable trout]

It is a bug, the solution is to wait until the bug is fixed, or avoid things that cause the bug

Meaning mods

[fast plume]

Ah, thank you for awnser.

Ill try with some script once i come home