I have reported it and would like somebody else to also report it. I am on a Mac.
In my case I traced it down to the same prop being loaded multiple times that makes a call to the same object file. The prop came from a pp2 configured to work in Poser 5. The internal file name from Poser 4 and 5 when you have multiple props of the same item is not the same in PP2010. There is an extra colon that gets generated in PP2010, that it appears the internal render engine can deal with, but the background render engine can not.

I have not compared to Poser 6 or 7 and how a pp2 is saved off.

You can see what I am talking about by saving the prop off in PP2010 and compare the internal names. You can edit the version 5 prop file to be like the pp210 file and it will work. But that is way to much work based on the amount of older content I have accumulated.

Now I am at work and all my notes are at home. But if need I can be more detailed off my notes if needed.

Gary

"Those who lose themselves in a passion lose less than those who lose their passion"