[Project_owners] extension stops working under Firefox 3.0.4 -- please help

Shivanand Sharma / Varun varun21 at gmail.com
Sun Nov 16 18:03:35 PST 2008

you'll have an install.rdf file in your extensio xpi. Search for the string
"maxversion" without quotes. this is the string that decides the
compatibility of your addon with the version of firefox. If you are just
testing you can bump it up to 300. But a valid version can be pulled from

Shivanand Sharma
Producer and Editor
http://www.binaryturf.com (Web Technology & Blogging)

On Mon, Nov 17, 2008 at 7:14 AM, can <can at ecpcorp.net> wrote:

> Many thanks again to all the nice people who helped me with my first
> uninformed question.  I think this one is a little more substantive.
> I have written my first "Hello World" Firefox extension.  I had some
> confusion about installing it, but I think I got that straightened out now -
> BUT ONLY under Firefox 3.0.3.  Yesterday, Firefox updated itself without
> giving me any chance to stop it (at least as far as I could tell).  I now
> have version 3.0.4.  I didn't think that would be a big deal until I got
> back to trying to work on my extension.  Now, the exact same extension that
> works under 3.0.3 will not install under 3.0.4.
> I have tried two install methods: (a) copy my extension directory to the
> Firefox profile/extensions directory (where Firefox installs), (b) set the
> appropriate Windows Registry key to point to a directory where I have
> unpacked the contents of my .xpi file.  In case (a), Firefox starts and I
> see *nothing* new in the Extensions window.  In case (b), Firefox starts,
> and I see an entry for my extension, but it is whited out and there is a
> message that says, "This extension is not compatible with Firefox 3.0.4."
> I have a separate computer that (thank God), is still running 3.0.3, and
> everything still seems to work there.  I tried searching for posts from
> other people who might have encountered this problem and have come up with
> nothing.  Can anyone help?
> As a related question, hopefully much easier, can someone please tell me
> how to stop Firefox from updating its version WITHOUT my permission?  I
> would expect at least an OK/Cancel box.
> Thanks,
> can
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