Unable to install FireFox Add-ons. Strange. :(


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I've got no idea why but I thought it was just one particular addon that I was trying to install but nothing appears when I restarted Firefox. That addon was Ubiquity. But now as I try to install another - MR Tech Tool, same thing, I install it but when I restart my Firefox, I do not see any option of even the addon is not listed in my Tools >> Add-Ons.

I have disabled all my add-ons to install those two above one by one but same, nothing appears.

Here are what I have:

Add-ons

17082009121639.png

Themes

17082009121659h.png

Plug-ins

17082009121659.png

What should I do next? :(

Okay I found the problem and answer from another forum. It is Kaspersky 2010 that is causing the problem. I have to pause the protection before I can proceed to install the new add-ons.

Strange. Does Kaspersky know about this? Any other way to remedy the problem than having to pause the protection to install?

...

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