Lightning Version History

68 versions

Be careful with old versions!

These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.

Version 1.5.2 4.0 MB Works with SeaMonkey 2.10 - 2.10.*, Thunderbird 13.0 - 13.*

Version 1.6b1 4.0 MB Works with SeaMonkey 2.11 and later, Thunderbird 14.0 and later

Version 1.5.1 4.0 MB Works with SeaMonkey 2.10 - 2.10.*, Thunderbird 13.0 - 13.*

Version 1.5 2.5 MB Works with SeaMonkey 2.10 - 2.10.*, Thunderbird 13.0 - 13.*

The full list of changes can be found here.

Version 1.5b2 1.9 MB Works with SeaMonkey 2.10 - 2.10.*, Thunderbird 13.0 - 13.*

Version 1.5b1 1.5 MB Works with SeaMonkey 2.10 - 2.10.*, Thunderbird 13.0 - 13.*

Version 1.4 3.2 MB Works with SeaMonkey 2.9 - 2.9.*, Thunderbird 12.0 - 12.*

Please see the list of Lightning 1.4 bugs fixed for details.

Version 1.4b3 2.5 MB Works with SeaMonkey 2.9 - 2.9.*, Thunderbird 12.0 - 12.*

Version 1.4b2 3.1 MB Works with SeaMonkey 2.9 - 2.9.*, Thunderbird 12.0 - 12.*

Version 1.4b1 3.1 MB Works with SeaMonkey 2.9 - 2.9.*, Thunderbird 12.0 - 12.*

Version 1.3 3.1 MB Works with SeaMonkey 2.8 - 2.8.*, Thunderbird 11.0 - 11.*

This version of Lightning is compatible with Thunderbird 11 and Seamonkey 2.8. The following notable fixes are included:

  • Improved interoperability for Apple iCloud and Chandler Servers
  • New Toolbar to match Thunderbird's tabs on top visuals
  • Improve selection behavior in Calendar View
  • Fixed a regression that kept invitations from being processed

Version 1.2.3 2.9 MB Works with SeaMonkey 2.7 - 2.7.*, Thunderbird 10.0 - 10.*

Fixes two small issues with invitations. If you are using Thunderbird 10 or Seamonkey 2.7 and make use of the email invitations feature, please upgrade as soon as possible.

Version 1.3b3 2.7 MB Works with SeaMonkey 2.8 - 2.8.*, Thunderbird 11.0 - 11.*

Version 1.3b2 2.2 MB Works with SeaMonkey 2.8 - 2.8.*, Thunderbird 11.0 - 11.*

Version 1.3b1 2.0 MB Works with SeaMonkey 2.8 and later, Thunderbird 11.0 and later

Known issue: Events cannot be deleted using the views. Workaround: Delete from inside the event dialog.

Version 1.2.1 2.9 MB Works with SeaMonkey 2.7 - 2.7.*, Thunderbird 10.0 - 10.*

Fixes an important issue that affects certain CalDAV servers, where the organizer and attendee is set wrong.

Please also see the version notes for Lightning 1.2

Version 1.2 2.9 MB Works with SeaMonkey 2.7 - 2.7.*, Thunderbird 10.0 - 10.*

The most important fixes in this release are:

  • Updates timezones to 2001n which fixes timezone issues for Russian users in particular.
  • Provides hooks to allow provider extensions to install an ACL Manager.
  • Some fixes for the Chandler and Zimbra CalDAV Servers.
  • Fixed a critical issue while modifying items offline on a CalDAV Server

Version 1.2b3 2.9 MB Works with SeaMonkey 2.7 - 2.7.*, Thunderbird 10.0 - 10.*

The most important fixes in this release are:

  • Updates timezones to 2001n which fixes timezone issues for Russian users in particular.
  • Provides hooks to allow provider extensions to install an ACL Manager.
  • Some fixes for the Chandler and Zimbra CalDAV Servers.
  • Fixed a critical issue while modifying items offline on a CalDAV Server

Version 1.2b2 2.5 MB Works with SeaMonkey 2.7 - 2.7.*, Thunderbird 10.0 - 10.*

Version 1.2b1 2.4 MB Works with SeaMonkey 2.7a1 - 2.7, Thunderbird 10.0a1 - 10.0

The most important fixes in this release are:

  • Updates timezones to 2001n which fixes timezone issues for Russian users in particular.
  • Provides hooks to allow provider extensions to install an ACL Manager.
  • Some fixes for the Chandler CalDAV Server.

Version 1.1.1 3.1 MB Works with SeaMonkey 2.6 - 2.6.*, Thunderbird 9.0 - 9.*

This release fixes a critical issue for some users on Windows XP. If you are using Lightning 1.1, you are advised to upgrade as soon as possible!

Version 1.1 3.1 MB Works with SeaMonkey 2.6 - 2.6.*, Thunderbird 9.0 - 9.*

Version 1.1b2 3.1 MB Works with SeaMonkey 2.6a1 - 2.6.*, Thunderbird 9.0a1 - 9.*

Version 1.1b1 3.1 MB Works with SeaMonkey 2.6 - 2.6, Thunderbird 9.0 - 9.0

Version 1.0 3.0 MB Works with SeaMonkey 2.5a1 - 2.5.*, Thunderbird 8.0a1 - 8.*

The most notable bugfixes and new features are:

  • Full offline support, when the "Cache" is enabled for a calendar
  • Improve diagnostics for the ICS provider
  • Fix the top startup crash. Please give Lightning another try if you previously had issues
  • Some fixes for the alarm system, specifically related to snoozing and recurring events
  • Allow opening events already accepted via invitation
  • Fresh new UI style for all calendar views

You can find the full release notes on the calendar website.

Version 1.0rc3 3.0 MB Works with SeaMonkey 2.5a1 - 2.5.*, Thunderbird 8.0a1 - 8.*

This beta release is identical to Lightning 1.0, but on the developer channel to make sure the latest version is available to users of the developer channel.

Version 1.0rc2 2.9 MB Works with SeaMonkey 2.5 - 2.5, Thunderbird 8.0 - 8.0

Version 1.0rc1 2.9 MB Works with SeaMonkey 2.5 - 2.5, Thunderbird 8.0 - 8.0

Version 1.0b7 3.0 MB Works with SeaMonkey 2.4a1 - 2.4.*, Thunderbird 7.0a1 - 7.*

Version 1.0b5 3.1 MB Works with SeaMonkey 2.1 - 2.3.*, Thunderbird 5.0b1 - 6.*

This release fixes some urgent issues that slipped in to 1.0b4. The most important are:

  • Remote calendar with webcal:// location not working
  • Thunderbird Does Not Process Meeting Invites from Outlook, Google Calendar
  • startup crash [@ cal::UTC()]
  • wcap not working since TB5 and Lightning 1.0b4rc2
  • Snoozing/Dismissing one event on alarm popup closes entire window
  • Event invitation not sent out when Outlook compatiblity is checked