Help Forum
Sorry you're stuck but there's almost always a pretty easy fix! Do NOT try to start all over again, uninstall Max's Pitch Package, etc. That can make it worse. There's a 95% chance the same snag/fix is listed & answered in the Help FAQ. But if you can't find it there, post your problem here.
Make sure you post in the right category below & be sure to include a screencap showing the issue!
It sounds like you're working on Lab 1b, rather than Lab 2b where you've posted this. This issue is answered in the Help Forum under Lab 1b, Step 31. To save yourself time & trouble, always check the Help FAQ first. 99% of all the snags that students run into are already answered there and you can get the fix instantly rather than waiting for us to get back to you.