*forgets one tiny significant detail*

Bleh, I was just about to make another huge post until I noticed what you said, Violet. I checked that site while I was writing my first huge post, but it didn't seem updated then. (I could've easily overlooked it since the organization at the bottom isn't the greatest, plus there isn't anything obvious pointing out that the article has been updated. You also might want to mention that for multiplayer mode the regenerating event itself has to be usable in MP outside of MCE's so that it can be usable in an MCE. Just my thoughts.) I did manage to mention one thing that wasn't in any article, namely Pyro's innovation for using event 255 in an MCE. Anyway, I would agree that using all those belts could lead to some additional problems.

Now, the reason behind Dx's problem. Violet's article now gives more detail on the Generator in an MCE, so just scroll down and read about it. That's all related to why the RF powerup keeps moving in that loop in the glitched level. It intially makes absolutely no sense if you're seeing it for the first time. The Belt Left and Belt Right events move in opposite directions, so how can this be possible? It turns out the RF powerups (event 135) are moved 121 pixels in the opposite direction of the belt, which is similar where an MCE generated event would appear if the RF powerup were to be used as the Generator. Each time the powerup meets up with a belt, it moves 121 pixels in the opposite direction, so it makes perfect sense why the powerups loop.

And the original MCE system I made was only tested with ammo (as you could imagine). I guess that's what happens when you rush things and forget to mention a few details.