FYI, for those upgrading the Poser version, we've been instructed at the RDNA forum to delete the previous installation of Reality 3 by deleting the Reality folder from the Addons folder...which should be located inside the Python folder in your installation (usually in Program Files, unless you put it somewhere else on install).

花 | 美 | 花美 | 花火 
...It's a pun.