Does Element AAX Work With Pro Tools First
To be clear, this question is about Pro Tools First, not regular Pro Tools. Normal versions of Pro Tools fully support Element.
The short answer, no, Element does not work with Pro Tools First. According to Avid, Pro Tools First supports AAX plugins downloaded from the marketplace. Third party AAX support works with some plugins.
Quote from Avid's knowledge base - "Some plug-ins installed manually (outside of Marketplace) will work with Pro Tools | First, but most plug-ins will remain hidden and unavailable at launch." - http://avid.force.com/pkb/articles/en_US/faq/Can-I-use-any-AAX-plug-ins-with-Pro-Tools-First