https://www.posersoftware.com/downloads

Here is the link to download 11.2. You can try it for 21 days after which you need to buy a valid license. Since you have Poser 9 then you can get it for the upgrade price $99 or there about. As far as Flash at the college I work at we just got rid of the last 2 Mac labs due to issues with them running (or not running) software and they are no where close to being the current version. A lot of the programs they won't run are from Adobe, so it could be a wide attempt to improve security by preventing older software from working?

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13