invitation cannot be accepted

Bug #1238459 reported by Dmitry Karasik on 2013-10-11
This bug affects 4 people
Affects Status Importance Assigned to Milestone
Exchange Data Provider for Lightning

Bug Description

I'm receiving a mail with invitation but lightning doesn't show buttons where I can accept it. Instead this exception is shown:

[JavaScript Error: "[Exception... "'[JavaScript Error: "foundAttendee is null" {file: "resource://calendar/modules/calItipUtils.jsm" line: 1209}]' when calling method: [calIOperationListener::onOperationComplete]" nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)" location: "JS frame :: file:///z/home/dmka/.thunderbird/e8s54mqt.default/extensions/%7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D/components/calCompositeCalendar.js :: <TOP_LEVEL> :: line 520" data: yes]"]

Dmitry Karasik (dmitry-karasik) wrote :

Apparently, changing line calItipUtils.jsm:1209 from

--- if (foundAttendee.participationStatus == "NEEDS-ACTION") {


+++ if (foundAttendee && foundAttendee.participationStatus == "NEEDS-ACTION") {

resolves my problem, but that's not necessaily a correct solution

Jason D. (tronman) wrote :

Hi there,

I ran into this identical issue trying to accept certain invites from an Exchange server. Other invites from the server seem to work just fine. I made the same change as suggested above and all seems to be working well again. Hopefully it doesn't have any other unintended side effects.


Diego Marmsoler (dmarmsoler) wrote :

Hi all,

for me it was the same. I could not accept any invitations. Then i manually edited the file as indicated above and now it works. This seems to be an important bug. I could not hanlde calendar invitations for several weeks until i discovered this post.



fury (fury110) wrote :

Hi & thanks,

same for me and the fix seems to work (W7 Home, Thunderbird 24.1.1 with Lightning 2.6.3, invitation from Office2010).
Do we still need to add the MIMETYPE ms-tnef in mimeTypes.rdf?

Regards, fury

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