I had the same problem after map update 2013.20 and 2013.30 CNNTUEU
With EU 2013.10 (the original) works fine.
I've tried everything with the 2013.20 and I could not
2013.10 reinstalling all working properly.
Even with the 2013.30 did not work initially.
After several tests, I could re-installing the firmware 7.60 (the release was in use then) from the SD and even completely reinstalling all the files from the Garmin Web Updater always TEXT.
To be honest I do not know which of the two procedures has allowed the proper functioning of ASR ..... even now with the 770 everything is working correctly.