I've also experienced an issue with a page using a contact form with Universal Email.
I applied PowerCMS to a section of a template - every page on the site worked fine afterwards with the exception of the Contact page, which gave an error where the CMS-managed content should have appeared. The rest of the page was blank. There was also a Google Maps widget on the page, if that's of any consequence.
I've attached the contact page php file and a screenshot of the error received.