If you contact support with your serial number they may be able to help you:

https://www.posersoftware.com/webforms/1

As far as updates, I had Poser Pro 2014, not Poser 10, but I seem to recall that they used the same installer, but might be mistaken. The PP2014 SR is available here:

https://www.renderosity.com/mod/forumpro/?thread_id=2949609#msg4394414

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The Wisdom of bagginsbill:

"Oh - the manual says that? I have never read the manual - this must be why."
“I could buy better software, but then I'd have to be an artist and what's the point of that?"
"The [R'osity Forum Search] 'Default' label should actually say 'Don't Find What I'm Looking For'".
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