From what I understand I'll need to put the first cube on the button in the metal "house" on your right (seen from the entrance). I'll need to get the cube in from the roof since all the other sides are blocked one way or another. I'll need to stand on the button inside the house or the cube will be dissolved by the field. So I'll need to make the cube follow me somehow, but my portals disappear once I go through the field. So I have to get the cube go through the portals somehow, jump through the field once it out of the portal, go down and press the button, disabling the field before the cube reaches it and then I'll have the cube? I'm guessing you're supposed to activate that button first since it's marked with one dot...
Maybe there is an easier way to it, but if it's this complicated then I'll have no chance in hell to pass the other chambers xD

