I have used Cod Radiant at CoD4 before so i know something about making maps, not totally noob ( :Dddd)
but now i got a interesting problem with skybox and radiant. I used skyboxmodel- way to get sky on my map but when i set the key "skyboxmodel" and value "sky_mak1", whole radiant stop moving. It wont crash or error messages wont popup. It just freeze. Only things that works are buttons in left corner (like "save" and "open"). All the windows at radiant turn to grey color and when i am trying to close radiant i can't see any popup windows like "save changes first?". I can only hear the sound of them and press enter randomly to close radiant. Removing skyboxmodel at worldsetting wont help. My first map is ruined now XD
Sorry for bad english skills. I hope somebody get the idea

Open .mapfile via Notepad and check how you typed the KVP in. Usually this kind of issue happens, when it cant find the model

I have used Cod Radiant at CoD4 before so i know something about making maps, not totally noob ( :Dddd)
but now i got a interesting problem with skybox and radiant. I used skyboxmodel- way to get sky on my map but when i set the key "skyboxmodel" and value "sky_mak1", whole radiant stop moving. It wont crash or error messages wont popup. It just freeze. Only things that works are buttons in left corner (like "save" and "open"). All the windows at radiant turn to grey color and when i am trying to close radiant i can't see any popup windows like "save changes first?". I can only hear the sound of them and press enter randomly to close radiant. Removing skyboxmodel at worldsetting wont help. My first map is ruined now XD
Sorry for bad english skills. I hope somebody get the idea

Change sky_mak1 to skybox_mak1, thats why it keeps giving problems
(And do what hitman said to change it!)

it seems that your worldspawn got deleted :L i know you have to add it with notepad using another map's worldspawn
Just copy a worldspawn entry from an existing map into this maps .map file. Make sure that it's the first entity in it(entity 0).