Windows 8.1 Compatibility Issue
 

I'm using the following:

Windows 8.1 RTM (Build 9600)
Microsoft Surface Pro
Toshiba Dynadock
DisplayLink Software 7.4 M2

DisplayLink software installed fine, but after a reboot the system tray icon says it is incompatible with my hardware or operating system.

USB Mouse and keyboard work through the dock but my additional monitors are not detected at all.

Any advice?

Fixed by installing the August Surface Pro Driver Pack from Microsoft. It was probably the video drivers.