FireFox 4.0 RC1 / beta and Delicious Addon workaround
Hi,
Just a short info how to use the current beta / release candidator of FireFox 4.0 and the Delicious.com Addon:
Install the delicious addon ( v2.1.106 )Â even when it is “not compatible” with the current FireFox 4.0 RC1.
On Unix/Linux Environment:
Open a shell
cd ~/.mozilla/firefox/*/extensions/{2fa4ed95-0317-4c6a-a74c-5f3e3912c1f9}
vi install.rdf
and change the following row:
em:maxVersion=”4.1″ />
Then startup Firefox and be happy 
On MacOS Environment:
Open a shell
cd ./Library/Application\ Support/Firefox/Profiles/*.default/extensions/\{2fa4ed95-0317-4c6a-a74c-5f3e3912c1f9\}/
vi install.rdf
and change the following row:
em:maxVersion=”4.1″ />
Then startup Firefox and be happy
On Windows Environment:
go to:
C:\Users\*YOURUSERNAME*\AppData\Roaming\Mozilla\Firefox\Profiles\*??????.default*\extensions\{2fa4ed95-0317-4c6a-a74c-5f3e3912c1f9}
where *YOURUSERNAME* is your login username and *??????.default* will be any curent random directory ending with .default.
There you will find a file called index.rdf
Edit this file with a nice Editor (NOT Notepad or Wordpad!) like “Super Notetab” ( http://www.notetab.com/ ) and change following row:
em:maxVersion=”4.1″ />
after that, restart your Firefox browser and have fun