Quote - Yeah, that's true, there's not much info about it, although I think they say Sidegrade is for Poser 6, 7 and 8 users. I feel silly for having to ask, but I don't want to charge it, then suddenly realize I chose the wrong one and have to go through a lot of tech support.

I don't think that could happen, as you need a valid serial # in order to make the purchase. That's why I said just enter the serial number and see if it accepts it - then you know your choice is correct.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3