If you run into any issues with starbound and your server files reports back this:
[Error] UniverseServer: Exception caught accepting new connection: (JsonException) Improper conversion to bool from null
0x47415f <???+0> at /usr/local/games/starbound/beta/starbound_server
0xaef05d <_ZdaPvRKSt9nothrow_t+6392333> at /usr/local/games/starbound/beta/starbound_server
0xaf8b76 <_ZdaPvRKSt9nothrow_t+6432038> at /usr/local/games/starbound/beta/starbound_server
0x50ef4b <_ZdaPvRKSt9nothrow_t+231675> at /usr/local/games/starbound/beta/starbound_server
0x50f033 <_ZdaPvRKSt9nothrow_t+231907> at /usr/local/games/starbound/beta/starbound_server
0x8023d04f5 <pthread_create+1829> at /lib/libthr.so.3
The fix to this will be as followed:
ClanForge > Edit Profile > Configs > Starbound_Server.config
In here you want to make sure these three things are set correctly.
"allowAssetsMismatch" : true,
"checkAssetsDigest" : false,
"serverOverrideAssetsDigest" : null,
Once these are all set you can then restart your server.
Starting up your client you will then need to proceed to Options and in there is a Allow Assets Mismatch box that you will need to tick.
This will allow your client to basically say "Yes, I would like to join this server even though I don't have all the mods"
If you have any further issues about that please contact support!