I still have Poser 5 on my computer. I didn't even realize it until today. I wasn't able to get it to work even with different. I only have Windows 10 but I doubt 11 is more backwards than 10.

Poser 8 was the first with Flash. I also still had Poser 7 on my machine until recently.

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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.
Check out my store here or my free stuff here
I use Poser 13 and win 10