So in current release looks like your primal game data has to start with “PrimalGameData” vs just contain it in asset name. This will be changing in the next release. Also your primal game data has to be in the root mod folder for now.
I’d love to talk to someone that is having this issue with their mod and to know if recooking with these two changes (name/location) fixes it for them.
Example server command line: “ShooterGameServer.exe TheIsland?GameModIds=111111111?SessionName=TestSession?listen”