Have you tried unzipping your content in a different place (say like a folder called Downloads), and then manually moving the continent into your Poser Runtime? I ask, because I never EVER unzip content directly into Poser. I always unzip it in a Downloads folder and manually place it into Poser where I want to put it.

"A lonely climber walks a tightrope to where dreams are born and never die!" - Billy Thorpe, song: Edge of Madness, album: East of Eden's Gate

Weapons of choice:

Poser Pro 2012, SR2, Paintshop Pro 8