Hi,
I am having what sounds like the same issue as described in this previous, and now closed thread:
https://forums.garmin.com/showthread.php?228671-Please-Wait-While-We-Finish-Setting-Up-Your-Device
This started when the activities from my forerunner 610 stopped uploading. I'd installed express on a new laptop, had successfully synced and uploaded a few runs, then nothing. The watch synced, a bar flashed across the screen but no data. So I tried uninstalling and reinstalling express and the reinstallation just hangs after the nickname stage, with the message Please Wait while we finish setting up your device.
I'm in contact with support via email, but so far nothing has helped. Was the thread above successfully resolved? Could it be as simple as a faulty ANT stick?( though this seems unlikely as it finds my device and the quick but incomplete/empty data transfer happens)
Any ideas? It's getting really frustrating.