I am using FF ver 39.0 on XP. Starting 7/2/15 FF began to not access certain pages properly which I have used OK for years. All these sites use interactive animation. Problems started with a popup from Adobe Flash saying I needed an upgrade. I think what I need to do is reinstall a clean version of FF and carefully reload addins one-by-one. I need advice about how to do this. I may also need to try substitutes for some addins, particularly those that are used for interactive animation sites. One thing I tried was to uninstall adobe flash and install Shumway. This fixed some sites, but not all.

I have uploaded two images: (1) my plugins, (2) my extensions.