Can't install flash player on mac

Hello,

I was successfully running flash player 9, and since sites kept telling me to upgrade to 10, I tried. I followed all of the suggestions, I uninstalled 9, downloaded 10...seemed fine until I tried to install 10. I double clicked on the icon and it flashed impotently and that's as far as I've gotten. Now I'm really stuck because I can't reinstall version 9 so I have NO flash player at all.

According to the site and the troubleshooting instructions at Adobe, I should be able to load it with no problem. I have a MacBook Pro, intell based, running OX 10.4.11.

Any suggestions?