Man you have it in wrong directory!
As an example to test this little issue I asked someone to give me a copy of your map..which I put in my directory
And I'm terribly sorry to tell you that I had NO PROBLEM whats so ever with the map...loaded up and played just fine.
So I'm sorry to reply same thing as everyone else but I suspect you have it in the wrong directory!
If problem persists..PM me and I'll check further! But that should sort issue!