I have got the two orbs in the attic, but nothing happens...any clue?
Did you drop them both? If so, I might have broken it while fixing other things, I'll have a look.
Added some disambiguation for the orbs, it should work now. If it still doesn't, you might have to restart the game (by typing QUIT).
Fixed!
I liked it, the puzzles are clear and all the objects are useful for something, which makes an adventure suitable for children. I hope you have time to put graphics and do a second part ... you want more after going through the portal! ;-)