After upgrading from 3.0Beta7 to 3.0Beta8, all device graphical icons on the map are gone!

I have the same problem too(( MT based on x86 computer...
what to do)?

Hello, I reloaded the icons with the "Device Type" window. Importing the correct icon file for the devices fixed my maps.
As a general guideline: backup to xml as often as you change your maps!!
Johann