Do you mean Universal Email 4.0.1 (That would be the latest UE version a s a stand alone)?
The stand alone version of Universal Email is not compatible with Dreamweaver CS6.
It was replaced by Form Builder and most recently by Data Bridge.
You will need to upgrade to Data Bridge to have Universal Email functionality in Dreamweaver CS 6, other wise, you will need to continue using your Previous Dreamweaver version.