Yes, 6d is stable. I don't think I've ever had a problem with crashing, not that I can remember at least. It's certainly no less stable than poser itself...oh wait...um better than vista...um no um. Seriously, it seems fine.

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Available on Amazon for the Kindle E-Reader Monster of the North and The Shimmering Mage

Today I break my own personal record for the number of days for being alive.
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I use Poser 13 and win 10