The cause of this error could be several things... difficult to diagnose in a typed Q/A format like this.
While the previous "rerecord the failing commands" advise is sound, here's "plan B" if you run into problems or you're not ready to jump into that sort of thing.
I have CS3. If you'll e-mail the .atn file to me (click my name above/left for e-mail addy), it will take about 5 min. to diagnose and get you going.
I promise to purge the .atn at my end when done so there's no issue regarding you sending me a "purchased" .atn I did not pay for. I don't do scrap booking. :)