No problem, guys
There's an error in the Coagulate changelist, saying that "the lamps now have collision". The lamps always had collision, it's just that when changing the lights I deleted most of DrunKenobi's lights I also deleted the collision of the lamps* and it got me confused. In other words, that line shouldn't be there in the changelog.
On another note, if it's possible I'll release all the levels at once in one comprehensive pack. I'm still not sure how I'm going to do Canyon Fear, because the terrain-based geometry seems to be all created with 3dsmax, a program which I don't have, but there always are alternatives.
*clarification: the collision is created by the light actors inside the lamps and not by the geometry of the lamp itself, because the lamp geometry is non-solid (otherwise you won't be able to see a corona) and therefor it cannot have collision.