Error uploading a map

I am trying to upload a map to the workshop but the file appears as read.

The name is gm_jump_track_motanum and I made it using the CSS version of hammer.

Anyone knows how to fix this problem?

Come on! Anyone? Any clues what might be causing the problem?

Could the prefix gm be the problem?

No. He is either not placing the map into right directory, or just bad luck I guess.
Motanum, please read article on how to upload stuff to workshop on the gmod wiki.

The directory is gmod/maps and I can play the map from the menu, so it works in game. I’ll give it a full read again, just in case.