Problem with Thunderbird 8.0 Rated 5 out of 5 stars
UPDATE: The comments below are true for v1.1. Version 1.2 apparently corrects things. Thanks!
When downloading/installing this addon directly (through the addons tab) initially it works: I can see the option Message Body as All Body Parts.
However, when I close and restart Thunderbird, although the addon is enabled, the above option in the menu is no more there. You have to remove (disable/enable does not work) the addon and re-install to have the option again.
I have tried in three different computers with the same results.
Note: If I try to install from file (downloaded xpi) and not directly (through the Addons Thunderbird page), then the addon does not work: the option is not added to the menu at all.
If it works, indispensable!