Windows 8 should come already bundled with the latest Flash Player. It is no longer installed seperately like it was in windows 7. You will receive flash player updates through the Windows Update.
Was flash not working for you before you tried installing the latest player?
I found the problem. You were right. I had to do a reset on the tablet yesterday, to fix a software bug, which brings it back to an earlier baseline. Someone showed me the Windows Update check. This showed that many Windows Updates needed to be applied. That's still in progress, but I'm reasonably sure that it will bring in the latest version of Flash.