I'm currently working on a map that was created before I reinstalled my mod tools after getting a new PC a few years ago.
I have had an issue where the game tells me that I'm missing "zombiemode_utility.gsc" when I load the map using the in-game console.
So I reinstalled the mod tools and the problem persisted, so I used the UGX Script Placer to make sure, to no avail. It overwrites my original .map, and any scripts I can manually drag and drop into the mod folder, means the map doesn't load using the in-game console.
After enjoying Comosea on solo, I finally completed it after 2 attempts, the 2nd being timed gameplay. I dunno how my score stacks up against other people's, but here's two pics: