Upgraded to Garmin Express and now transfer of data only seems to work in one direction. Activities transfer to my Mac just fine but I can't transfer workouts to the 310XT. When I click "send to device" it goes through the whole syncing process without error messages, yet when I check the 310XT there are no workouts on it. A list of workouts is queued under Sync Status on my Dashboard but no matter how many times I try to send it won't actually do it. I had hiccups syncing the 310XT with the previous software, finally got it working smoothly, now I'm back in the same mess. AAARGH!!
