TAC should already have this in their knowlegebase.
Ask them if the following fix will work for you before trying this:
1) Click on the VisualRF to get the message
2) Edit the URL to replace /vrf with /site_list and hit enter. Don't expect to see anything happen
3) Login to the Airwave root shell account and remove the file /var/airwave/cache/visualrf_bootstrap
4) At the same root prompt, enter the command "psk airwave.visualrf"
I would suggest you remain with 8.0.3.1, it does work better for us, once we got it started.