How to re - activate the FF 29 Add-on compatibility check

Several weeks ago, I installed FF 29.0.1 on two virtually identical XP systems. I have been carefully maintain extensions, settings, etc., in parallel on both systems.

Initially, my main system told me if an extension in my search list was incompatible with 29.0.1, and no doubt, that's what I want to do.

However, I recently installed a couple of extensions, which seemed to work very well. (I had downloaded installers and then installed in the files.) Then, when I tried to install from the same files on the second system, he told me that they were incompatible with 29.0.1, and that they could not be installed.

I would like to re - activate the verification of the compatibility of the system on which it seems to have been turned off. I tried FF forums at length, but may not know all the information about: config or other settings may have an impact on this.

The error message that I get on a system when trying to install some extensions is a small box of drop-down menu of green extensions Manager icon near the top left corner of the screen. However, it disappears when you press the 'Print screen' key and does not appear in the captured image. I noticed this kind of weird on some other sites. So, it seems impossible to get a picture of the message. The message may be re-displayed, but not printed, by clicking on the green icon. However, the text of the message, ' < name of the extension - > could not be installed because it is not compatible with Firefox 29.0.1.» Note: It is easy to reproduce this message, temporarily turning on extensions.strictCompatibility and tries to install older extensions.

In any case, the system on which I was getting the message now behaves identical to my other system, apparently without any change of parameters. Therefore, I believe that it was a persistent but temporary problem that may have been fixed by a reboot. Therefore, the problem seems to be resolved.

Tags: Firefox

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