Modding Help Packet Exception when Deploying Mech (Multiplayer Only)

So when I try to use my mech on my friend's server, it deploys and sends me to the title screen with a Packet Exception.

Here's the error from the server log:

[01:42:52.017] [Error] WorldServerThread exception caught handling incoming packets for client 8: (EofException) Failed to read full buffer in readFull, eof reached.
[0] 12fe94a
[1] 12fd808
[2] 12929d5
[3] 129f0fe
[4] 1297cfb
[5] 1297704
[6] 12977e0
[7] 14cb34b
[8] 14f2966
[9] 14dc6d5
[10] 12dd52e
[11] 12dd9fe
[12] 12dd52e
[13] 12dd9fe
[14] 13a11e5
[15] 16e9bd6
[16] 175a300
[17] 176bd7f
[18] 176b83a
[19] 12fb2ac
[20] 7517336a BaseThreadInitThunk
[21] 76f298f2 RtlInitializeExceptionChain
[22] 76f298c5 RtlInitializeExceptionChain
[01:42:52.088] [Info] UniverseServer: Client 'Hal' <8> (my IP) disconnected for reason: Incoming client packet has caused exception
​

We use Frackin Universe and several other mods and have used our mechs before with no issue, I can depoly my mech in my single player world just fine.
I've tried restarting the server, my own game, I'm about to try removing mods one at a time.
Any suggestions are welcome.

 

Solved: Steam updated FU but the server was on last weeks version.

ANyone know of a dedicated host that keeps mods up to date?