Mozilla Firefox has lots of add-on programs. If you use latest version 3.5 of Mozilla you will find problem with the old add-ons. These old add-ons don’t support newer version of Mozilla. For example ,google gear ,google toolbar etc. Recently Google updated these add-ons. But there are still some add-ons which are in old version. They still don’t support new Mozilla brouser.
Here is a tips by which you can solve this problem.
If you close “Extension checking”of Firefox these old add-ons will work. For this open a new tab. Write " about:config " then press enter. A warning will appear I’ll careful ,I promises. Click it. Now right click of mouse anywhere of brouser From Menu-New-click Boolean. Now write extension. Check Compatibility in New Boolean Value box. Now install desired add-ons & restart Firefox. If you find problem installing add-ons download it from other browser then install it in Firefox
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