FileOpen and Google Chrome
If you are unable to read PDFs using the FileOpen plugin in the Google Chrome browser, this is easy to resolve.
Chrome has a built in PDF viewer that doesn't support the FileOpen plugin. If you disable the built-in PDF viewer, Chrome will use the Adobe reader with FileOpen instead.
To disable the built-in viewer, enter "chrome:plugins" in the address bar and click Disable underneath the entry for "Chrome PDF Viewer." The Adobe Reader plug-in will automatically be enabled (if you have it installed). For more information, see this Google Support page on the Adobe PDF plug-in.