Latest Answers

• Lightning 4.0.2 will not install on Thunderbird 38.2.0

  '''Update: This happened again with Lightning 4.0.4 and Thunderbird 38.4 ''' The Lightning add-in appears in the Extensions directory with prompt to restart Thunderbird to comp…

• Lightning 4.0.2 will not install on Thunderbird 38.2.0

  Thank you christ1 for staying with this problem. Other users: the problem was resolved with the last response from Christ1. I deleted the 'staged' directory underneath extensi…

• Lightning 4.0.2 will not install on Thunderbird 38.2.0

  what "later version" means. Version number was the same, but in the download directory it had a later date. I was speculating that this was a problem for many users and that it …

• Lightning 4.0.2 will not install on Thunderbird 38.2.0

  Tried several solutions (including Crist1's helpful idea) and Lightning 4.0.2 still does not install properly in Thunderbird 38.2. I tried the earlier EN build identified in the …