Popup notice to download Flash Player Pro

I keep getting the following pop-up message when I go to use something requiring the Flash Player. The message starts with text I am unable to copy. The following text is the only part of the message I was able to copy.  I'm afraid to download because I wiped out a previous computer hard drive by downloading what I thought was legitimate Adobe.  I seem to have the latest version of Adobe Flash Player and Google chrome purportedly updates as needed.  Has anyone else received the following popup message? Is it legitimate?

Flash Player Pro is distributing custom installers which are different from the originally available distribution. These new installers comply with the original software manufacturers’ policies and terms & conditions. Optimum Installer is an install manager, which manages the installation of your chosen software. In addition to managing your download and installation, Optimum Installer will offer free popular software that you may be interested in. Additional software may include toolbars, browser add-ons, game applications, anti-virus applications, and other types of applications. You are not required to install any additional software to complete your installation of your selected software. You can always completely remove the programs at any time in Windows’ Add/Remove Programs.