After installing beemod it is indeed gone.

@derPacifist Possibly. I'm glad it wasn't anything major tho.
Beemod is generally worth using even without doing anything fancy with it, so it would be worth looking into.
Only drawback is there is the occasional thing that isn't fully function for non-beemod users, but the vast majority of it is fine, including the custom test elements.

Stick to the "improved original clean" or whatever it's called and you probably won't run into any errors at all.
Use the portal 1 style and all non-beemod users are completely screwed XD

@WaifuLover69 No worries, there were turrets. One error was in the laser field in front of the portal surface. Do I need to download the mod to show these models?

@derPacifist, where were the error messages? Was it the turrets in the cages?
Or somewhere else?
I'm using Beemod, so there's probably a couple elements that didn't have models in the base game (and aren't packed in with levels for whatever reason, stupid beemod being amazing but having some annoying things like that)

Solid puzzle! There are error messages floating around, but it works.