Hi -
I am yet another sucker that purchased a 310xt device. I've been trying REALLY hard not to bash garmin on Amazon, BeginnerTriathle and other sites but I would hate for anyone else to spend their money on such a defective product. Seriously, this is BY FAR the worst experience I've had with any fitness product. I've been able to upload most of my workouts but not before doing 2 "hard resets". Tonight I was trying to upload my latest workout and the Ant+ Agent as always was spinning around "searching for devices"... I tried uploading manually (which is the only thing that has ever worked for me) and nothing... my workout wouldn't show in my list of available workouts to upload. I went to history and tried forcing the upload but that didn't work either. I've searched google extensively for a solution but everything goes back to "hard reset". I'm honestly so sick of this. I can't believe Garmin can get away with sh.t like this. If your device doesn't work then pull it off the shelves and quit taking people's money. You must have a million bugs in your bug tracking system (if you have one) related to this issue. I would really like a resolution to this problem or I would be more than happy to take my money or my rant elsewhere.
BTW - Some people have suggested to try a different browser. This is NOT a browser related issue since I've tried 4 different browsers to no avail.