Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options) key, and then starting Firefox. Is the problem still there?

Separate Issue; Your System Details shows;

Installed Plug-ins

Shockwave Flash 16.0 r0

Adobe Shockwave for Director Netscape plug-in, version 12.0.9.149 Adobe Shockwave for Director Netscape plug-in, version 12.0.5.146

Having more than one version of a program may cause issues.

Grab the uninstaller from here: Uninstall Flash Player | Windows Uninstall Flash Player | Mac Then reinstall the latest version.

Flash Player Version 17.0.0.134
https://www.adobe.com/products/flashplayer/distribution3.html Shockwave Director Version 12.1.7.157 http://get.adobe.com/shockwave/

Thanks for your response! I tried starting in Safe Mode and the problem was still there. I then took your advice and uninstalled Adobe Flash Player and then reinstalled the latest Adobe players that you had listed but the problem still exists I have also tried uninstalling Firefox and reinstalling.

Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia

You are running Firefox in compatibility mode for Windows 98 (NT 4.10) according to the user agent.

• Mozilla/5.0 (Windows NT 4.10; rv:36.0) Gecko/20100101 Firefox/36.0

Make sure that you do not run Firefox in compatibility mode. You can open the Properties of the Firefox desktop shortcut via the right-click context menu and check the "Compatibility" tab. Make sure that all items are deselected in the "Compatibility" tab of the Properties window.

I would like to thank FredMcD for trying to help, and I would like to report that the issue was resolved by the solution from cor-el. It was a compatibility mode issue. Once I deselected the box in the compatibility tab and re-started the computer, the issue was resolved. Thanks again to all that assisted me in resolving this issue.

Good to hear, Safe Surfing.