marpeto

I have had the same problem, all caches disappears after a power cycle on the GPSMAP 64st. Started to safely remove the GPSMAP from the computer by right-click in Explorer and unmount the drive. Then I'v had no problems. I think Garmin has a general bug in their USB-handling software if this bug exists in many GPS devices.

Yepp - I've contactetd Garmin support here in Sweden - but no solution from them - just question. The weird think is that the GPX-file is recognized for a couple of boots, and then it refuses - but the file is still there - and I've haven't been USB-attached it meanwhile - just been using it in the woods....

Option 1 wasn't stable - the caches was suddenly gone - now going for option 2 Nope - that (use an microSD-card) didn't do it either. After a couples power off/on the geocaching files is not longer recognised by the GPSMAP 64, and it doesn't matter if you place them directly on the microSD card or by using Basecamp. I would say that the GPSMAP 64st right now at fw 3.0 is almost useless if you want to put your own GPX-files (like PQ from www.geocaching.com) on it. You'll only be frustrated that the files are there, and when you are out on the field and power on again (or replacing the batteries) the caches won't be recognised - ahhhh.

Option 1 wasn't stable - the caches was suddenly gone - now going for option 2

Haven't been using Basecamp at all, thought it was more effective to place it directly on GPSMAP 64st 8GB internal memory. But I think I'll have to give up. It gives me two option left: 1 - Use Basecamp to import the GPX-files 2 - Buy an SD-card and place the GPX-files there Testing option 1 to see if its stable... If not I'll go for option 2. I have no problems with the OSM-map-files (img), placing then directly to the GPSMAP 64 st memory.

Sorry - I forgot to write that I made an empty GGZ folder, so your suggestion doesn't do the trick for me. I even tried to make a GGZ-file from a GPX with ggzgen.exe. Seemed to work nice, until I connected Basecamp - then the manual uploaded GGZ-file (named as preload.ggz) was not recognized any more by the GPSMAP 64st. Got it (for now - wonder just for how long?) working again by removing the GGZ-file connected to computer, power-off, power-on without connection to computer, power-off, power-on with USB-cable and move the GGZ to GPSMAP 64st again, remove USB-cable, power-on again and answer yes to import, wait 15 minutes and the power off, power on and then it's working again. If I make a GGZ-file it seems to work longer, but be aware that I think Basecamp is screwing up the GGZ-file. Yeah - It would be nice to have a proper way/instruction how to handle your GPX-files, cause every active Geocacher would probably update their GGZ/GPX-file every week. This is the main reason I bought a GPSMAP 64st - and that function is bugging a lot!

I'm at fw 3.0 and have a problem. I have removed the default geocaching database, cause it was not relevant/updated (just renamed GGZ-folder to GGZ-backup). Then I created a Pocket Query with the geocaches in my area and downloaded the file to the GPX folder in the GSPMAP 64st. Powered on and all the caches was there - perfect! But then I powered off to save batteries, and when I powered on again the caches doesn't show - but the file is still there in the GPX-folder - nothing else changed - just a power off and then on again. Bug? The only way I could figure out to get it temporary working again was: 1 - Remove the GPX-file from the computer 2 - Disconnect from the computer and then power on and power off GPSMAP 64 st 3 - Connect to the computer and place the GPX file again in the GPX-folder 4 - Disconnect from the computer 5 - Power on when I want to use GPSMAP 64st for geocaching. Is there a way to fix it - or is it a bug in the firmware?