Help me out please

[Winnuting]

Hello, I'm new to the BF2 editor. I am going through the tutorials, I have my map made. when I want to test my map I pick it from the list and once it is loaded I click Join Game. As soon as I click join the game - Crash To Desktop!

Any help on this?

Thanks in advance.

[Winnuting]

Why is this happening? Am i forgetting to do something? Please help me out.