Can't see mytrails on my 64st

[lib]

I'm a newbie to the GPS world.  I loaded Northeast USA Topo part 1 and My Trails, it's on a SD card.  The NE topo looks great on the GPS, but I don't see anything of the My Trails images.  I have tried it with only NE topo and the My Trails enabled on the GPS. I zoom in and see nothing.  It looks fine in basecamp. 

I have tried it with only the My Trails map enabled and just see pretty much a blank screen, except for the summit icons - no trails.

[Red90]

You probably need to zoom in fairly far to see the trails.

[lib]

Thanks for your reply.   I removed the SD card and loaded "My Trails" to the internal memory and it works fine.   So.. maybe I did something wrong, or the file on the SD card is corrupted, although everything looks OK (16 GB card) when attached to the PC via the GPS. 

[Boyd]

The card must be formatted FAT32. If not, it will work on your computer but not the GPS. The map file needs to be in a folder named Garmin.

[lib]

Thanks.  I put the SD card into a reader and checked properties, it is a FAT32 file system.  The Garmin folder is there containing the My Trails (.img), along with the NE Topo part 1 (which comes up fine).

Since it's working great from internal memory, maybe I'll just leave it, or delete the one on the SD card, do a reload, and try it again.