UT crash when I connect to the UT TacOps server we rent

We rented a server at NGI to play TacOps (UT).
As soon as we try to connect (after we provided the password), UT shows on the screen for a fraction of a second the TacOps screen where you can chose to play SWAT or Terrorists and then it crashes with the following error:

General Protection Fault!

History:UConsole::PreRender<-EGameEngine:raw<-UWindowsViewport::Repaint<-UWindowsClient::Tick<-ClientTick<-UGameEngine::Tick<-UpdateWorld
Any ideas?
Any help?

I ask NGI not to charge us until we can connect to this server and use it. Some other players from our Clan made the same test and got the same crash.

But we can connect and play on other servers with no problems.

Could it be that CHSP4+ is creating the problems?
pls
use the [email protected] dedicated email...