When playing the campaign, (Core in this case) the Narrator starts telling the story about the mission and he only says a few words then it stops, loops back to the start and then repeats infinitely. Anything I can do to fix this?

Since no one replied, using DXWND especially if you are on windows 10 seems to have fixed stuff like this. I kind of keep repeating this but in overall a lot of these problems are related to this.

I'm on Win7 if that matters. Also: What is DXWND?

Weird. Well, you could still use a BIK video viewer to see the videos in C:\Cavedog\Kingdoms\Movies

Also: "DxWnd is a utility to hook into DirectX games and override fullscreen."
Mainly to decrease lag depending on OS, increase compatibility or something like that.