Stuck after loading all models

[Mispeled]

Hi, a friend of mine is trying to get Trem to work on his machine running Windows XP...

He joins a server, the models all load, but then it gets stuck with everything at 100%. Couldn't find any similar problems in recent threads or FAQ; sorry in advance if this is a common problem

[Thorn]

Pull down the console , does it show any errors?

[techhead]

Likely, it says "Unpure Client Detected"
Am I right?