Please check tools > developer > error console for possible relevant information

So there are several Errors present, but the ones that show up when I try and view a search'ed email is as follows (unfortunately it makes 0 sense to me):

08:52:09.039 Uncaught NS_ERROR_ILLEGAL_VALUE: Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIObserverService.removeObserver]

   uninit chrome://messenger/content/about3Pane.js:4188
   <anonymous> chrome://messenger/content/about3Pane.js:135
   closeTab chrome://messenger/content/tabmail.js:1111
   removeTabByNode chrome://messenger/content/tabmail.js:1129
   connectedCallback chrome://messenger/content/tabmail-tab.js:98

about3Pane.js:4188 08:52:42.719 Uncaught (in promise) TypeError: domNode is null

   _bindUI chrome://messenger/content/quickFilterBar.js:272
   init chrome://messenger/content/quickFilterBar.js:56
   init chrome://messenger/content/about3Pane.js:4078
   <anonymous> chrome://messenger/content/about3Pane.js:108

quickFilterBar.js:272:11 08:52:42.928 Uncaught TypeError: win.messageBrowser is undefined

   openTab chrome://messenger/content/mailTabs.js:100
   _cloneTemplate chrome://messenger/content/mailTabs.js:66

mailTabs.js:100:13

   openTab chrome://messenger/content/mailTabs.js:100
   _cloneTemplate chrome://messenger/content/mailTabs.js:66

08:52:42.990 NS_ERROR_FAILURE: Couldn't decrypt string 13 crypto-SDR.sys.mjs:199

   decrypt resource://gre/modules/crypto-SDR.sys.mjs:199
   _decryptLogins resource://gre/modules/storage-json.sys.mjs:855
   findLogins resource://gre/modules/storage-json.sys.mjs:707
   findLogins resource://gre/modules/LoginManager.sys.mjs:558
   getStoredLogin chrome://cardbook/content/indexedDB/cardbookEncryptor.js:158
   getStoredKey chrome://cardbook/content/indexedDB/cardbookEncryptor.js:169
   init chrome://cardbook/content/indexedDB/cardbookEncryptor.js:134
   <anonymous> chrome://cardbook/content/indexedDB/cardbookEncryptor.js:326
   <anonymous> chrome://cardbook/content/wl_cardbookAbout3Pane.js:9
   _loadIntoWindow jar:file:///C:/Users/rs/AppData/Local/Thunderbird/Profiles/3ksbkgsh.default/extensions/cardbook@vigneau.philippe.xpi!/chrome/content/api/WindowListener/implementation.js:1978
   InterpretGeneratorResume self-hosted:1455
   AsyncFunctionNext self-hosted:852

08:52:43.057 NS_ERROR_FAILURE: Couldn't decrypt string 13 crypto-SDR.sys.mjs:199

   decrypt resource://gre/modules/crypto-SDR.sys.mjs:199
   _decryptLogins resource://gre/modules/storage-json.sys.mjs:855
   findLogins resource://gre/modules/storage-json.sys.mjs:707
   findLogins resource://gre/modules/LoginManager.sys.mjs:558
   localizeLogin chrome://cardbook/content/indexedDB/cardbookEncryptor.js:206
   init chrome://cardbook/content/indexedDB/cardbookEncryptor.js:139
   AsyncFunctionNext self-hosted:852

08:52:43.172 NS_ERROR_FAILURE: Couldn't decrypt string 13 crypto-SDR.sys.mjs:199

   decrypt resource://gre/modules/crypto-SDR.sys.mjs:199
   _decryptLogins resource://gre/modules/storage-json.sys.mjs:855
   findLogins resource://gre/modules/storage-json.sys.mjs:707
   findLogins resource://gre/modules/LoginManager.sys.mjs:558
   getStoredLogin chrome://cardbook/content/indexedDB/cardbookEncryptor.js:158
   getStoredKey chrome://cardbook/content/indexedDB/cardbookEncryptor.js:169
   init chrome://cardbook/content/indexedDB/cardbookEncryptor.js:134
   <anonymous> chrome://cardbook/content/indexedDB/cardbookEncryptor.js:326
   <anonymous> chrome://cardbook/content/wl_cardbookAboutMessage.js:5
   _loadIntoWindow jar:file:///C:/Users/rs/AppData/Local/Thunderbird/Profiles/3ksbkgsh.default/extensions/cardbook@vigneau.philippe.xpi!/chrome/content/api/WindowListener/implementation.js:1978
   InterpretGeneratorResume self-hosted:1455
   AsyncFunctionNext self-hosted:852

08:52:43.249 NS_ERROR_FAILURE: Couldn't decrypt string 13 crypto-SDR.sys.mjs:199

   decrypt resource://gre/modules/crypto-SDR.sys.mjs:199
   _decryptLogins resource://gre/modules/storage-json.sys.mjs:855
   findLogins resource://gre/modules/storage-json.sys.mjs:707
   findLogins resource://gre/modules/LoginManager.sys.mjs:558
   localizeLogin chrome://cardbook/content/indexedDB/cardbookEncryptor.js:206
   init chrome://cardbook/content/indexedDB/cardbookEncryptor.js:139
   AsyncFunctionNext self-hosted:852

Hi rs41:

Please try troubleshoot mode: https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird

If that doesn't help: Please provide the following troubleshooting details to help us help you:

1. Please let us know your email provider (unlikely to cause the problem but stranger things have happened) e.g. gmail,
2. what 3rd party software like add-ons, anti-virus or firewalls you are using (and please try disabling them and see if that helps)

Cheers! ...Roland

Hi rs41: Please try troubleshoot mode: https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird If that doesn't help: Please provide the following troubleshooting details to help us help you:

1. Please let us know your email provider (unlikely to cause the problem but stranger things have happened) e.g. gmail,
2. what 3rd party software like add-ons, anti-virus or firewalls you are using (and please try disabling them and see if that helps)

Cheers! ...Roland

Thanks...that was very helpful. It turns out the cardbook plugin doesnt play nicely with supernova...which is a shame because we use it constantly.

Glad it's working for you rs41. Mozilla doesn't support Thunderbird add-ons, therefore: Please file an issue at the Cardbook site if there isn't an issue already about 115 (I think there are already 115 issues but just in case they don't cover your problem) https://gitlab.com/CardBook/CardBook/-/issues

Closing this thread! Cheers! ...Roland

https://gitlab.com/CardBook/CardBook/-/issues/1516#note_1491494383 seems to have fixed it on July 28, 2023