Adobe Acrobat Reader has not been installed on your computer

Question

I get this error when trying to print from a website.
Adobe Acrobat Reader has not been installed on your computer.
You will be directed to a site where you can download
the most recent version of Adobe Acrobat Reader.
But I already have reader installed and its up todate. HELP. I use a mac, This happens on Chrome and Firefox.
I have tried disabling and re abling the plugin. I disabled the default browser viewer. still cannot view the item to print.

Answer 1

Have you done ALL OF THIS?
In Firefox make sure you have at least two (2) tabs open - (Ctrl+T opens a new tab)
In the address bar of one tab, type "about:config" - minus the quotes, of course
You'll see a warning. Click "I'll be careful, I promise" and continue to the configuration page.
There's a search bar at the top. Type "js" - again, minus the quotes.
In the results you'll see pdfjsviewer.disabled with a vaule of false. Click it once, then right click it and choose Toggle to make the value "True".
Close that tab.
Click Tools>Options and go to the Applications tab
Locate Adobe Acrobat Document (or Portable Document File (PDF)) in the list and click the drop-down to select "Use Adobe Reader (in Firefox)". (Mine doesn't have that because I also have Acrobat Pro installed)
Click OK.
Click Tools>Addons to see that the Acrobat plugin is installed
Close and restart Firefox. PDFs should now open in a browser window with the Reader plugin.