Also experiencing same problem, Same screenshot. Here's the console.
roger@rogerhp:~$ thunderbird [calBackendLoader] Using libical backend at /home/roger/.thunderbird/y1h2640k.default/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/components/libical.manifest TypeError: Components.classes[cid] is undefined -- Exception object -- + fileName (string) 'chrome://calendar/content/calUtils.js' + lineNumber (number) 22 + columnNumber (number) 0 * -- Stack Trace -- _calIcalCreator/<@chrome://calendar/content/calUtils.js:22 now@chrome://calendar/content/calUtils.js:385 switchToView@chrome://calendar/content/calendar-views.js:325 ltnSwitch2Calendar@chrome://lightning/content/messenger-overlay-sidebar.js:402 calendarTabType.modes.calendar.openTab@chrome://lightning/content/messenger-overlay-sidebar.js:45 openTab@chrome://messenger/content/tabmail.xml:554 oncommand@chrome://messenger/content/messenger.xul:1 roger@rogerhp:~$
Also experiencing same problem, Same screenshot. Here's the console.
roger@rogerhp:~$ thunderbird .thunderbird/ y1h2640k. default/ extensions/ {e2fda1a4- 762b-4020- b5ad-a41df19331 03}/components/ libical. manifest classes[ cid] is undefined //calendar/ content/ calUtils. js' /<@chrome: //calendar/ content/ calUtils. js:22 //calendar/ content/ calUtils. js:385 chrome: //calendar/ content/ calendar- views.js: 325 dar@chrome: //lightning/ content/ messenger- overlay- sidebar. js:402 .modes. calendar. openTab@ chrome: //lightning/ content/ messenger- overlay- sidebar. js:45 chrome: //messenger/ content/ tabmail. xml:554 chrome: //messenger/ content/ messenger. xul:1
[calBackendLoader] Using libical backend at /home/roger/
TypeError: Components.
-- Exception object --
+ fileName (string) 'chrome:
+ lineNumber (number) 22
+ columnNumber (number) 0
*
-- Stack Trace --
_calIcalCreator
now@chrome:
switchToView@
ltnSwitch2Calen
calendarTabType
openTab@
oncommand@
roger@rogerhp:~$