Ah recently, there has been huge map glitches, for no reason, everyone has been getting them, some people cant even go in maps. Admins are working on getting it fixed, im sorry, but you may have to wait. But if this isnt one of those glitches, it may just be a problem with the map objects etc. Id keep retrying, maybe take everything out and redownload the map but before putting everything back into the FH file , restart the game, put everything in, then restart it again.