OK, I have a problem with the plugin for Mozilla Firefox. It was working fine. I did a system restore last night up to the point where the theme and plugin were not yet installed, and when I reopened Mozilla, the theme and the plugin was disabled and when I clicked Tools and Ad ons the theme and the plugin were no longer there for me to enable. I searched them in the computer and found the folders containing them but there was no way of enabling them once more for Mozilla. The only way to get them running was to download and install them again but that would have doubled their files in the computer. Any suggestions please?