The problem is the Re-volt doesnt launch from RV House when i join to room.
When i host room everything is ok, but when i join to room Re volt starts but doesnt work. I use version compatibile with WolfR4, windows xp firewall is turned off for re volt and rvhouse.
Uninstall WolfR4 and update Re-Volt to v1.2
Get the update installer here: http://rv12.zackattackgames.com/downloads/rv1.2a12.1225.exe
To fix the problem of cant open revolt you have to run RV House as admin.
From Properties, compatibility, select run as admin.