I cant seem to get it to work either, game loads up, then says mission couldn't be loaded, then spawns in about 2k west into the debug. able to get back on the map and everything is where it's supposed to be, but the base isn't "protected". not sure really what to do to fix it.
usually means u screwed somthing up in mission.sqm. make sure all brackets close and open correctly. also your numbers in item## are increasing by one.