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!