when i tried making my map it didnt work i used gtk radiant also make sure you select what gametype for single player or multiplayer coz if you dont you wont be able to play it plus you need to have pak space if you just wanna mess around on your map get a template.pk3 file form google or somthing open it with pak space now what you need to do is try and convert you .map file to bsp and put it in the map section of pak space a freind told me that all you need to get the map to work is the bsp file
hope this helped