Black borders and beeping on viewer in listen mode.

[ashh]

I'm trying to test Single Click on two computers connected directly to my router on the same LAN.

I start the Viewer in listen mode on my main computer. I then run the Single click client executable on the computer I want to control and activate the "Internet support" option (not encrypted).

Immediately, back on my main computer, a black border (stretching across both monitors) is displayed for half a second and a the desktop beeps, this repeats for a total of 3 times. Then there is a gap of about 30 seconds and it repeats until I stop the Viewer.

My main computer (running the viewer) has 2 monitors running at 1600x1200. The computer I want to control has one monitor at 1600x1200. I tried a lower res on the computers with no change.

I don't think this is a connectivity problem as the Viewer seems to respond as soon as I activate the Single click client. I am reasonably confident I have opened the required port and have the correct IP address.

Has anyone seen this problem before? Any help would be greatly appreciated.