v1.3.3 is on both the client and server. When client tries to log into server, it gives the error: "SErver Mod rejections: Monk: Requires version 1.0 but mod is not found on client." Was working an hour previous, leveled up to 20 followed by a restart of both server and client.

Nevermind, I was clicking on the wrong mod pack. Stupid stupid stupid.