Thre are new mesages posted on the DAZ|Carrara forums stating that Transposer is NOT part of the C6 product or upgrade.

You can purchase Transposer 2 for C6 as a separate product (add-in?) - listed at $99.99, but currently discounted. It will NOT work with Poser 7 files.

Bummer!!! Personally I thought it should have been included with C6 Pro - or upgrade, since It alreadty came with C5 Pro.