I've found most, up to this point, fairly easy. But this particular puzzle was impossible for me!!!... Thanks for the quick tutorial. Now I feel stupid. LOL ;) ^5
I found same bug someone mentioned earlier; I collected Star first, and one of the fans is locked out in that small area with a pad that activates fan that lifts red focus thingy. Now I have to reset level.
I've been sitting on this for an hour and managed to break the level by squeezeing through the tunnel with fan using a cube. Looking at this, I can guarantee I would never have found the right solution
I found a secret switch on this level. Behind that fan that is activated by the red laser. To see it, after removing this specific fan, put a box near it, and keep jumping on top of the box (looking to the other side of the wall). By doing that you will also be able to notice that there is one extra box on this level, just under the prism that redirects the red laser. Sorry for bad english, but i was wondering if someone knows what those are for. Is there any purpose for them being on this level?
To go there stack 2 boxes near the lower section of the wall and jump on them using the fan, then jump on top of the the section of the wall. From there you can take one of the boxes before jumping off. Place the box on the secret switch, it will activate a fan just under the prism that will make it float higher. This way getting the star in the room next to this is way much easier. You don't really need to do all this though, as the star can be taken regardless.
+Salvatore Patti i found a bug there. i placed one box just next to that "bridge" over the ventilator (besides the red connector) and i got shown a "jump here" prompt onto that bridge which let me jump up there from only one box! but it only appeared once so i had no chance to take one of the items with me back there.