I downloaded the suggested EncoreContent_en-US.zip that contained 2.87 GB and extracted the file to my current cs6 encore folder. Unfortunately, even though Adobe claimed that it contained the whole preset library, it is not true, the background, buttons, image etc... are still missing.
Can someone help me with this issue?
There are TWO links for missing Content... PPro & Encore basic and Encore extra
Encore additional http://helpx.adobe.com/encore/using/download-library-content.html
Did you do both downloads and installs?