Well, there’s an easy “hack” (kludge, whatever) around it:
- Download the “.XPI” plugin file, rename it to a “.ZIP” extension.
- Unzip it to a temp directory.
- Edit the “install.rdf” file.
- Search for the “install.rdf” file for the “MaxVersion” XML attribute and change the version to a version greater than or equal to the version of Firefox you’re running.
- Save the “install.rdf”.
- Zip all the files in the “.XPI” back together again including the “install.rdf” you just edited (will be a “.ZIP” file of course).
- Rename the “.ZIP” file back to a “.XPI” file.
- Open the Firefox and go to “Tools / Add-ons” and just “drag and drop” your new “.XPI” file on the window (note at least in Firefox 3 you can just drop it anywhere in the view pane even without going to “Tools / Add-ons”).
That’s it. Note it may or may not work as there could really be an incompatibility. My guess is usually there isn’t (neither QuickProxy nor Exif Viewer had an issue when I fudged them).
Note this was taken from Mr. Sandman’s review of QuickProxy here:
and I assume it will probably work with all other Firefox plugins.