Check your Plugin

• https://www.mozilla.org/en-US/plugincheck

Make use of Adobe Reader to View and Download PDF.

• https://support.mozilla.org/en-US/kb/use-adobe-reader-plugin-view-or-download-pdf-files

Otherwise, Make use of FOXIT Reader.

• http://www.foxitsoftware.com/downloads/
• http://www.foxitsoftware.com/Secure_PDF_Reader/addons.php

Try to disable the Adobe Reader plugin in Firefox (Tools > Add-ons > Plugins) and use the external Adobe Reader application or Preview application instead.

• https://support.mozilla.org/kb/pdf-files-are-blank-and-cant-be-downloaded-mac
• Firefox > Preferences > Applications > Adobe PDF document : Use Adobe Reader

PDF files may also be found under another entry like Portable document.

Thanks - seems to work - surprised that an Adobe add on would cause the problem

I have tried all the recommendations I've seen such as switching to the Adobe reader external program. I also tried to install another plugin I was led to on this site. Nothing works.

In fact Firefox is becoming decreasingly useful. I think they are getting to cute and making this browser to cumbersome and buggy. For example, I an no longer download statements directly from Bank of America's site into my financial app. Now I have to manually download the file and click on it. It used to download and automatically open up.

I have a feeling my days of using Firefox are numbered, which is sad because I've been favoring Mozilla browsers since Netscape was new.