Moving Discussion to Premier Pro Forum Discussion
The basic content is an installer, so I want to say "no."t But I don't know what it actually would do if CS6 is not installed. But the CS6 functional content installer (for PR and EN) REMOVES the CS5.5 Encore library. Go figure.
This was true some time ago, and I have not heard it was fixed.
If would try the process and see if the content can be uncompressed. In the end, it is just content in folders.
For the Encore full library templates and buttons etc, you can just expand the compressed file and use it in CS5.