You cannot dynamic link between different versions.
There is no Encore CC; Encore CS6 was announced as the last version.
You must export from PR CC, then import to EN CS6.
http://helpx.adobe.com/encore/kb/encore-cs6-installed-cc.html
That link includes how to install Encore CS6, how to get the library, and a tutorial on workflow with Premiere CC.
It does not include a link to the Adobe Encore CC/CS6 FAQ: