There is a lot of people over on the google maps forum having the same problem.
I just talked to Google. This rep said I need to talk to HTC, as it appears to be a HTC compatibility issue on the RZ end. I said 6.9.2 runs fine. Everyone should call as noted above.
Rezound User - Retired Techie
I was hoping I wasn't alone. I hav noticed a LOT of apps do not work on my phone now and Google Maps rebooted my phone 4 times this morning before I gave up.
I've been having to use gps essentials (free from play store). I open essentials, click on satellite option, wait 10-20 second for it to have several fixed satellites, then open maps and it locks onto gps immediately. Not exactly what I would want people to go through to get one of my most popular apps working but at least it makes it useable.....