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I downloaded and looked at the ME map.  In MapSource when you zoom in enough you will see a double set of contours for some 'tiles'; one with the proper numbers for the elevation in feet and another with slightly different nodes and numbers 3.2xxx higher (the ratio being meters converted to feet).  I would guess somehow there are two sets of contours and GNIS points in some of the 'tiles' - one with proper elevations and one with a second conversion of meters to feet (the original NED 10m and recent GNIS are in meters - some builds of GM know when to do the conversion, in others it was left out for some reason).  Two files may have been merged, or different contouring options were tried and the unwanted one(s) not removed before the contours were saved or .mp file created.

If you look in the western part of the state, at the Mahoosuc Range, the elevations are all over the place.  Goose Eye Mountain is listed at 11,483 feet and all the surrounding elevations are similarly inflated.  I check around the map and it occurs over the largest area there, but I found pockets in other spots.  When you move the cursor over a mountain, it actually gives two elevations - one correct, and one very high, but when you look at the contour lines they also seem to have two or even three figures.  Here's a spot: N44.33.621 W70.58.804

I have not looked at your map, but this sounds very strange.  The 11,483 is close to a correct elevation in feet being converted from meters to feet again!?  Sounds like data from GNIS might have been duplicated - once with a meter to feet conversion, and again with a second conversion applied.  I have not seen the 2 or 3 contour line label issue before.  Are you close to using the max
memory on your machine?