Maybe test it yourself? Maybe your friend has that error? Or did he test it on your computer? That's really weird as that never happens very often. It may be that your map is broken. Does the point system work on your other maps? Am I correct?
edit:I forgot that you said he tested it on coop. Yea your map has to be broken, I think some files are corrupt.

If it says that, that means you have too many applications running in the same time. When I get this error I exit out of steam and build or compile mod. When I sign into steam before building my mod that shows up. So just close every browser or application using too much memory.

Damn that's weird never had that problem with my friends. Can you try to uninstall waw and install again? Maybe download t4m again?

Do you have the sp tool?

Uninstall and install waw?

Do you have the latest version of mod tools?

It's really difficult to find a tutorial about that topic, but here is a link for a tutorial if you want to change the voice characters. http://www.zombiemodding.com/index.php?topic=13980.0
If this helps you mark my reply as best answer.

When I try and click on a emoji it doesn't work.
Help? Also every button on top of the black ms box doesn't work...

It doesn't work! When I press on them they don't show up in the box.

There is a error everytime I load this map. It says, THIS MAP IS FANTASTIC! +1

Good shit man. This map is too difficult for me it was actually fun! +1 This is a map I am definitely going to play with friends.

How do I use these emojis/buttons? Above the reply box?

lol

Lmao sorry for the noob question

Doesn't ugx have cod 4 weapons tho? Can you just make a ugx mod map?