Wow... it is, at least, an amusing issue.
Preview is working fine for me between 3 computers (and, yay, it is WAY better than it was pre-1.5)... no comments on the fleet regarding this issue so I don't think it is a wide spread problem (yet).
Did you try an asset verification (from the patcher)?
Mine works flawlessly on my ship. It just does not work on any planets. I will try the asset verification. Thanks for the suggestion!