How To Fix Add-ons Campatibility Problem Of Firefox 6

“Same problems forever” I said to myself after installing Firefox 6, in a hot and stifling August day. As with any new release, even in this sixth version of Firefox automatically checks the compatibility of add-on and, as often happens, say goodbye to half of my extensions. The biggest problem comes when some of these addons are of vital importance, as IDM, or those extensions which perform vital roles every day which saves a lot of our precious time.
How then? I hate to disable the check on Firefox extensions, because it’s pretty important, but more investigating on the net I found two solutions while ago .. and still working!


Solution 1
The first is to install an add-on: Compatibility-Reporter . After installing and restarting Firefox our applications should be back compatible, but if it doesn’t work not, try solution 2.

Solution 2
Go to the Mozilla site and search for the extension that you would like to install but that is no longer compatible. Click on the link for download, but instead of  clicking install, right click and select “Save Target As”. Download the. Xpi file and click on it with the right mouse button and open it with “Archive Manager” (it may change from system to system, this entry) format. Xpi is just an archive that you can extract or open!
Inside we will find a file called install.rdf: open it with any text editor and find the following line:

"Em: MinVersion 2.0 / em: MinVersion
em: maxVersion 5.0 .* / em: maxVersion"

Where maxVersion indicates the maximum version compatible with Firefox while MinVersion the minimum version. Replace with 5.0 .* 6 .* or whatever version of Firefox with the addon you want to make compatible, save and install the extension by dragging it into Firefox window. If everything is successful you will get your extension installed after the restart!
I can assure you that in 99.9% of cases it will work with this procedure!