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I was using thunderbird v15.0 on ubuntu 12.04 LTS till now, and have the lightning extension installed to manage calendar within thunderbird application. everything was working fine until i decided to update thunderbird to the latest version 16.0 from ubuntu repository. installation was successful, and the profile everything was taken care of perfectly, except that now lightning is not working - it is disabled as lightning v1.7 is NOT compatible with latest thunderbird v16 yet. As a result i am at loss with all my scheduling.

now, i would like to go back to thunderbird v15 so that i can use lightning. ubuntu repository only gives TB v16 now. on mozilla site, they are still giving v15 for linux, so i downloaded the tarball and uncompressed using command line. now i have a folder called thunderbird. there are no readme/ configuration files. there are following 'executable files' inside this folder:

crashreporter, mozilla-remote-client, plugin-container, thunderbird and thunderbird-bin.

i tried invoking thunderbird and thunderbird-bin from command line using sudo, still nothing is opening up. i have execute permissions for this folder contents.

i m quite new to linux. please let me know why i m not able to launch thunderbird. did i install it incorrectly? please let me know if i can get a .deb package for TB v15.

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Please add some detail to your question as to how you upgraded to v16, as v15 is what is currently in the ubuntu repository. –  Jorge Castro Aug 31 '12 at 19:04
    
@JorgeCastro - in ubuntu software center, search for thunderbird and select "thunderbird mail" page. the version there says "thunderbird 16.0~b1+build1-0ubuntu0.12.04.1~mtn1" which i believe means v16. anyway, when i installed the application, the about screen showed v16. –  kallakafar Aug 31 '12 at 19:45
    
Ok, I've generalized your question a bit for future users, thanks! –  Jorge Castro Aug 31 '12 at 20:16

1 Answer 1

up vote 4 down vote accepted

Caveat: the following answer DOES NOT apply if you downloaded Thunderbird V16 from mozilla.org an installed it manually, if you have done that I would recommend uninstalling it and using the lastest version from the Software Center (all your email and settings should be saved but just in case save /home/.thunderbird and you can just paste it over the new folder(by the same name) after install if your settings and emails disappear.)


Thunderbird V16 is beta software so you must be using the beta ppa for Thunderbird.

You will either need to disable it or remove it.

The easiest way to disable it is to open the update manager in the "gear" icon of the Unity Bar(it will be the fourth menu item, may also say Updates Available):

enter image description here

click on the Settings button and then Other Software in the window that pops up:

enter image description here

You will then need to uncheck the ppa for http://ppa.launchpad.net/mozillateam/thunderbird-next/ubuntu then close the window and on the Update Manager window click Check to update your source list enter image description here

When finished it may show you Thunderbird V15(not yet in the regular Ubuntu Repo) or the current V14 (V15 was just released and should replace V14 shortly so you can just install V14 and then update when the official release comes out) if so you can just install it form there, if it does not show up or gives errors about a newer version being installed, you will need to use the terminal and type sudo apt-get dist-upgrade and then it should show you V14 or V15 of Thunderbird and allow you to install it from there.


You can also purge the beta ppa of Thunderbird by using ppa-purge and it will remove the beta ppa and then downgrade Thunderbird in one step. In a terminal type the following:

sudo apt-get install ppa-purge
sudo ppa-purge ppa:mozillateam/thunderbird-next

It will tell you that Thunderbird will be downgraded to V15/V14 and ask if you want to contiue, if you answer yes it will remove the ppa and downgrade Thunderbird to the lastest stable version.


[edit] A side affect of downgrading that I have not encountered with upgrades was encountered by the OP of the question, After a successful downgrade, the account profile was not found, we fixed it with the following:

  1. Open the Home folder and press Ctrl+H to show hidden files
  2. Open the .thunderbird file & find the file with your profile in it- it will be a file with a random name of letters and/or numbers followed by .default(i.e. 3qwerty.default). If there is more than one, open them and see which one has your settings.
  3. Open the file called profiles.ini
  4. Edit the last line in the profiles.ini file to read: "Path=name_of_your_folder.default" (i.e. Path=3qwerty.default) and then save the file. When you open Thunderbird, your account should be there.
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