This happened to me a couple of times -- it's frustrating, isn't it? But here's a suggestion:
Be sure you've gathered all the mudokons in the level (not just the 6 you need for the levers). Even if you have the right number, you may not have the right mudokons.
When this happened to me, I had to go and get 3 or 4 other "hiding" Mudokons and add them to the group. Once I did this, I had no trouble getting them to pull the levers.
Maybe it was just a bug that I somehow got around, or maybe it was intended this way, who knows!
|