I have this issue today. Tried nevest and previous version od BaseCamp on two PCs. Problem is with Epix (fresh out the box) and Fenix2. On etrex20 is ok.
Its some kind of global problem or what?
SUSSAMB, are you answering my post? Hard to tell. :-) If you are: I wrote "Could not find any hidden folders although I configured Windows to display them.". That leaves only "Others will also need to be switched from mtp to mass storage mode.". Let's see whether I can find out how to do that. Yes I could:
1.Bring up the volume screen on the GPS.
2.On the upper right hand corner.Press your finger on screen and hold for appx 10 seconds.
3.Shortly you will see the developers screen.
4.Find MTP Settings and touch it.
5.It will show 3 selections. MTP Auto Detect,Mass Storage and Mass Storage Single Session.
6.Touch Mass Storage as your selection.
7.Now select save and you are good to go.
Now let's see whether that helps ... Yes, it did!
(Sidenote: I simply replaced the v16 gmaptz.img with v15 and reset and reconnected the unit (so didn't need to perform all the steps listed above by Satnavman).)
Thanks everyone for your help in solving this. Now, as soon as Garmin's Support contact page works again, I might let them know to follow up on v16 with v17 sooner rather than later. :)
BR, L.