Can't download and install latest version of Flash...

I have tried several times to download and install the latest version of Flash player. It says it's downloaded, shows me that it's installing, then, when I click "Finish", it takes me to a website that says "Step 3 of 3", but is otherwise blank. I continue to see an error message on websites that require Flash; the error message tells me that Flash is out of date. Not sure how that's possible, since I just (supposedly) downloaded and installed the latest version from the website. I have walked through all of the troubleshooting steps on the Adobe site, with no luck. It's quite frustrating. What else can I do?