I've been stuck on it for hours. There just doesn't seem to be enough parts to make it work, and too many switches and keyholes to hit. Arrrgh. All the previous levels seemed possible, if tough, but this one looks impossible!
Have seen that it exists, but from that site: "This solutions file will not do anything with the iPhone version of the game, it only works with the Mac or PC versions."
I cant work out how to get my screen shots on to a reply but never mind.............I'm stuck on level 26 too. Has anyone else managed to complete this level yet??