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Thunderbird XML Parsing Error: undefined entity - Key id ="openLightningKey"

  • Amul benn tontu
  • 1 am na jafe-jafe bii
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So, my Thunderbird app will no longer come up. If I click on the thunderbird icon, it puts up and error box that says: XML Parsing Error: undefined entity Location: chrome://messenger/content/messenger.xhtml Line Number 905, Column 3 <key --^="" <="" id="openLightningKey" p=""></key>

and then if I close the error box (hit the X in the corner) Thunderbird goes down.

Now, originally, I could bring it up in safe mode and I could bring up the profile manage. I renamed default and created a new profile and now it won't start in safe mode either. I have uninstalled and re-installed to no avail.

thunderbird --full-version

Thunderbird 78.3.2 20201006011220 20201006011220

Ubuntu 20.10 updated to current.

Oh yes, if I start it from terminal: [calBackendLoader] Using Thunderbird's libical backend Extension error: Error while loading 'jar:file:///usr/lib/thunderbird/omni.ja!/chrome/messenger/search-extensions/twitter/manifest.json' (NS_ERROR_FILE_NOT_FOUND) resource://gre/modules/Extension.jsm:570 :: readJSON/</<@resource://gre/modules/Extension.jsm:570:20 onStopRequest@resource://gre/modules/NetUtil.jsm:128:18 </p>

Extension error: Error while loading 'jar:file:///usr/lib/thunderbird/extensions/messagingmenu@mozilla.com.xpi!/manifest.json' (NS_ERROR_FILE_NOT_FOUND) resource://gre/modules/Extension.jsm:570 :: readJSON/</<@resource://gre/modules/Extension.jsm:570:20 onStopRequest@resource://gre/modules/NetUtil.jsm:128:18 </p>

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