User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; sv-SE; rv:220.127.116.11) Gecko/20091102 Firefox/3.5.5 Build Identifier: version 18.104.22.168 (20090812) Trying to install the Swedish dictionary (svensk_ordlista-1.39-fx+tb.xpi) (downloaded it on the Thunderbird site). The program says that my Thunderbird 22.214.171.124 is not compatible with this dictionary and is referring to Thunderbird version 3.0b1pre or 3.1a1pre, but I cant find any of those versions on the Mozilla homepage. Reproducible: Always
The 3.0 Versions are Beta version of Thunderbird 3, you need the older dictionary for the TB2.0
It's Invalid because is the right behavior.