I've got a problem that perhaps you folks can help with. I've tried a couple of terrain maps and have settled on the pay-ware USA map from Abacus. In the meantime I DL'd a bunch of maps from various sources including some of the Alaska maps from this site. When I installed the Abacus map I was so happy with it that I deleted my old Alaska map. Now when I fly over certain parts of Alaska the terrain disappears. This only occurs when I get close to the terrain: the terrain in the distance appears normal but as I approach it suddenly flattens out.
I assume this is because FS is looking for my old Alaska maps which I deleted. Is there a way to "repoint" FS to the new Abacus maps for those areas? I assume FS keeps some sort of database on which maps go where since every time I install a map it gives me a "rebuilding terrain database" message on startup. My guess is I need to rebuild this database, possibly by simply finding it and deleting it and then maybe re-installing the Abacus map.