Help Forum
Sorry you're stuck but there's almost always a pretty easy fix! Don't try to start all over again–not necessary! Don't start undoing stuff and don't uninstall Max's Pitch Package, etc.
There's a 95% chance the same snag/fix is listed & answered in the Help FAQ. Check that first but if you can't find it there, post your problem + a screencap in the proper category below & we'll post a solution back ASAP!
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.