Purchased 2 Navionics Premium South Maps, came with the boat!!

: Installed Navionics Planner2 on PC. Hooked up Card reader and inserted first Mapping chip. Had no problems other than my computer wanted to open the files and did not recognize the file extension. Closed that window and started NavPlan2 and open maps.
: All fine, then inserted 2nd map chip, and windows attempted to open files again, started up NavPlan2 and selected Plug and Play again, only no maps show up in the window. Its like their gone.
Ran Explore on both chips, The one that works shows as G:Navionics and all maps appear in the window.
2nd chip show G:(HJJHKJ)dont remember the exact words but did not show Navionics. Ran and explore on the drive and it shows the maps. The first good map chip when inserted shows the navionics folder and a txt. document, the 2nd does not have the txt. document.
Any ideas !!!

Try the bad chip in your unit on the boat to see if the maps show up.

Yes, I have thought of that, I will have to wait until next Wednesday when i get home to try it. At work for now!!