Tekkit server issue

[Mod_masta]

I have set up a tekkit server, however I get this when I try to log in http://gyazo.com/60feb7c0ddff4f82a787ee61ff7609b4

Any idea how to fix this?

[disconsented]

You are probably on a different version of the pack compared to the server

[Mod_masta]

I have the lastest version of the server downloaded as well as the launcher.

[Mod_masta]

I've resolved the problem.

[Amaxter]

It would be helpful to others in the future looking for help with similar situations if you would say what you did that fixed the problem.

Also, to anyone reading this in the future , Hi!

[Mod_masta]

I had installed the coremods incorrectly, that was all :p