AlpineQuest & OfflineMaps

Happy new year to all
I've an error message that appears when using compeGPS RMAPS.
The message reads " unsupported datum NAD83, map may be offset"
My own maps in RMAP format are fine, only one layer, as are those from compeGPS which are multi layer, but the map is offset by 10m to the east and 25m to the south when compared with online sources or my own maps SQLITE DB made with globalmapper.
Is this dew to the NAD83 (which I've never used)
any solutions ?

Hi and sorry for the problem,
I don't think that the offset has something to do with the error message you get, since NAD83 is in practice equivalent to WGS84.
Do you see this offset in globalmapper?
Also, is there any way you can share with me one of the map with this problem (you can email me an dropbox file link or equivalent).
That would be very helpful to check what's wrong.