HP SIM 7.5.0 and Host File

I haveupdated HPSIMto version7.5.0.
Now I havenewserver,thesemust integrated with theHostFileintoHPSIM.

I'm wearing anewserverinthehostfile.When i click "ok" I getthe following message from SIM:

""There was a problem with your request, please try again later""

Any ideastothemessage?