NEED HELP with one error on the map "mp_icehen_night"

[G-Stuff002]

I use BotDev (MBot v0.7) for make WP. And dont use on this moment any mod, just clear (pure) COD2. And when i load this map his break me out on main menu with error, i attached the screen.

"...I wrote to the author" on PM with details. 2D is long for me because during this time, i completed the server startup

I forgot post here the script runtime error from the console. Momment...

		******* script runtime error *******
ambientPlay: alias name cannot be the empty string... use stop or fade version
: (file 'maps/mp/mp_icehen_night.gsc', line 5)
 ambientPlay ("");
 *
started from:
(file 'maps/mp/mp_icehen_night.gsc', line 1)
main()
*
************************************ 
	

Attached txt:Error script.txt