Can't install Adobe Flashplayer 11. Uninstalled old version. enabled Java. Allowed cookies. Install button grey.

Can anyone help me with this problem of installing Adobe Flashdrive 11, the latest version ? I'm bashing my head against the wall. Started when iPhoto would not load to Facebook and was advised it could be Flashplayer update after troubleshooting other options including deleting extraneous iPhoto files. I uninstalled older version, enabled Java, allowed cookies, downloaded installer but when I try to download it, the install button is grey and won't work. (This is, coindcidentally the same problem that suddenly began today with iPhoto which always worked fine before....grey button for "publish") It is ALWAYS a problem installing Adobe anything, and usually this same problem. All my software updates are current. Now I have NO Flashplayer and can't use YouTube at all, much less iPhoto.