I clicked on Custom Object and I do not get or see the webpage: New Custom Object.
this is the page I see:
Sorry you're stuck but there's almost always a pretty easy fix! Do NOT try to start all over again, eg. uninstall Max's Pitch Package, etc. That can make things worse.
Before you post make sure you check the Help FAQ for an instant solution first. Then, if you can't find it there, you can post your problem here and we'll get to it ASAP (within 24 hours), but be sure you:
post in the right category
INCLUDE AT LEAST ONE SCREENCAP IN YOUR POST TO SHOW THE PROBLEM!!!!!!!!
explain the problem clearly
This is due to a security/privacy setting in your browser. If you're using Safari, go into your settings and turn off "Block Cross-site Tracking". If you're using Chrome, go into your settings and turn off "Block 3rd Party Cookies".
Let me know, ok?