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, first enter "chrome://settings/content" in the address bar and hit Enter. A "Content settings" pop up window will load. Scroll down to the bottom of the window, and check the box next to "Open PDF files in the Default PDF viewer application." After you check the PDF Documents box, click on the Done button, and your settings will be saved. The Adobe Reader plug-in will automatically be enabled (if you have it installed).