Turned radio on this morning and DAX stopped running. I loaded 2.4.9 the day it was issued with no problems. Installed 2.3.9 without removing 2.4.9 and all worked well.
Looks like a complete install and reinstall is needed. Before that, check your audio drivers to see if they might have become messed up. You might also try resetting the radio. Latest W10 update has been wreaking havoc, and they have rolled back some of the updates.