Can you check that your server is configured properly? Follow these steps:
– Go to the !M icon in the system tray of the computeryou are connecting from.
– Click “Show server status/Connection status”
– Select Server preferences/Connection preferences
– Click on the NX service with the right mouse button (it’s the ‘NX’ under the ‘Name’ label)
– Click edit service
– Check the ‘Gateway port’ box