The last room- we couldn't get the non-laser-generating cubes to reflect the lasers as noted by Parano.Oya so we had to end the map at that point. We enjoyed it up to that point, however.

This map was really good and it had nice ideas :) But we found a critical bug:

The last quest with the "mobile laser creator" and it's two laser reflector cubes were annoying, because both laser reflector cubes hadn't reflect any laser and if you destroy a laser cube, then it's impossible to solve this subquest without using cheats. Is it possible to recreate destroyed cubes?