This is a security restriction of the Google Chrome's extension system.
You can workaround this problem by loading your page in a web server
You can also load the Firebug Lite locally, copying the source code
Finally, you can use the bookmarlet. See section "a) Bookmarlet":
2010/4/19 moritz <a5s...@gmail.com>:
> Not quite the same but similar: I'm trying to enable FireBug Lite 1.3--
> on pages loaded via the file: protocol and added "file:///*" to
> "permissions", unfortunately to no avail. Any clues on how to get
> this working?
> Thanks in advance,
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