Since the first feedback has rolled in pointing this out, I have started the process of testing the mod out on a wide variety of windows machines of different specs. I've yet to see it happen on anything I've tried so far, so I would like anyone who is having this happen to share their hardware specs, in the interest of trying to narrow this issue down.

I would also like to suggest the affected parties try re-installing MCC Halo 1 Singleplayer and multiplayer content, followed by the mod. No assurance this will help, but I'd like to rule it out.