Test something out....
Save the figure in poser 6 library to generate a poser 6 cr2, open a new empty scene and load this Figure you just saved and see if it behaves better.
I suspect there is something missing in the cr2 that poser 6 needs and maybe letting poser 6 save its own version will fix it.
If it works, compare the two files to see what it was that got added.
Remove each item that got added and see what minimum you can keep in for it to continue working in poser 6... then you will have isolated what the problem was.
Let us know if this results in anything :)

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a sweet disorder in the dress kindles in clothes a wantoness,
do more bewitch me than when art is too precise in every part