As you can see in the screenshot below I am not able to view the Pitch tab on the top. I was wondering why is problem was occurring. I was able to view it in Lab 1A but not in lab 1B.
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!