@Doghelmer Hurm. Are you sure you override-ed the Awake in the previous fix? Do you have a callback for the OnMatchJoined anywhere that might be gumming up the works? Do you have the right version of the plugin? There was a change from 5.3.x to 5.4.x which breaks some of the callbacks (this was actually a Unity networking API change). I don't think i've seen this specific error before, so that's all i got. Good luck!