MX FADING GRID ERROR - Whoa

Hi there.

Was doing the fading grid tutorial and when I tested the movie I got the following error:

“A script in this movie is causing Flash Player to run slowly. If it continues to run, your computer may become unresponsive. Do you want to abort the script?” I’ve gotten it several times now, and aborted each time.

what’s in there that’s causing this? Has anybody else had this problem?

Scary, Larry.

-B