I expect that the version of modulemanager on CKAN has been updated since I put together the pack, in which case I'll update it server side when I get back to my PC later.
Edit: Ok, back at my PC now. We've had updates on CKAN to Ferram, ModuleManager, NearFuturePropulsion and QuizTech Aero so I guess that was your problem. This is a little disappointing, since the ckan file I distributed specifically contains version I had hoped it would be intelligent enough not to suffer from this problem! Once no one is playing I'll attempt to update the server config to the latest versions (this will probably require everyone to run a CKAN update).
Update in progress
Upgrade complete. The server should refuse everyone entry now, all you need to do is run an upgrade from CKAN and you should be compatible.
@Enginish: You should be able to connect straight away