I have just published the latest release for the Thunderbird plugin Lookout-fix-version.
This is a bug fix issue
Fixes are for the ics parsing
Added quick decompose_rfc822_address sanity check
Occasionally a phrase without any email addresses is used in the attendee fields and this can cause the complex regex in the
decompose_rfc822_address function to freeze. As I couldn't come up with a sensible alternative (primarily due to lack of windat samples) I added a simple sanity check prior to the regex.
Added special character skip for ICS attendee data
Occasionally a special non printing character will be decoded,
x20 to x7E, causing the ics file to become unreadable. Lookout now ignores these invalid fields.
Added zero( 0 ) UID check
Sometimes the UID will be decoded as
0 rather than
null, if this happens lookout will now attempt one of the other UID methods as intended.
You can download this update from the Github Release page or the Thunderbird addon page