Okay, still in this desert palace. I've gone past the moogle in the library, made the staircase of light appear, and have now run up them to what appears to be a dead-end. Ran around a bit. Can't find anything. Read a walkthrough - said I must go up the staircase I ran up and light the candles at the top. I can see the candles. But light them, I can not.

Have I done something wrong or is this a glitch?