The Samsung flat panel monitor I'm using is not listed in the available monitor types. I selected a similar number, but the scan rates were outside the usable range for the monitor. I tried to back up to the monitor selection screen to try another monitor, but the selection option disappeared. I was unable to find a fully satisfactory scan rate (1024 x 768 32-bit true color) that works well for the monitor.
This issue is resolved in the latest beta installer.