I had an idea it might have been that one when I saw where it was located.
In a perfect world, all plugins and scripts would work together but unfortunately when something isn't functioning correctly, the most common source is a plugin.
If you need the page peel, all I can suggest is to find another plugin or script that does what you want but at the same time won't cause conflicts.
I'm not familiar with that particular peel plugin, but perhaps it's something easy for the developer of that plugin to add "no conflict" scripting to their plugin. The no conflict means that it would not conflict with other scripts running in the site. I'm not sure if they have that or not but you could always contact them....although if it's the one I just went to check out, you will want to be cautious of plugins that have not been updated in 2 years as the warning notice states on the plugin's page.