Help with Lightning Error "MODIFICATION FAILED"

[james moffat]

Hope this makes it through <thanks for the info Ken>

I have been having a Problem with Lightning when attempting to mark
tasks as done..

It will take forever to do individually IE 30-45 seconds each, or
will throw up an error and stop marking them as done if I attempt to
do more than 3 at a time

thunderbird 38.6
lightning 4.0.5.2 ?
<both are up to date as far as I know>

error: MODIFICATION FAILED

Timestamp: 11/03/2016 6:03:10 PM
Warning: There has been an error reading data for calendar: Home.
However, this error is believed to be minor, so the program will
attempt to continue. Error code: 0x80004005. Description: generation
too old for for modifyItem
Source File:
file:///C:/Users/user/AppData/Roaming/Thunderbird/Profiles/user.default/extensions/%7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D/calendar-js/calCalendarManager.js
Line: 960
Timestamp: 11/03/2016 6:03:10 PM
Error: An error occurred when writing to the calendar Home! Error
code: MODIFICATION_FAILED. Description:
Source File: resource://calendar/modules/calUtils.jsm ->
file:///C:/Users/user/AppData/Roaming/Thunderbird/Profiles/user.default/extensions/%7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D/calendar-js/calCalendarManager.js
Line: 963
Both of these errors occur each time I attempt to mark tasks
completed,

This has been happening for a looooong time but have decided to see if
there is actually something that can be done about.

Anyone willing to help out?

Thanks for any help you may have.

James

[Marcel Stör]

On 13.03.16 19:58, james moffat wrote:
> error: MODIFICATION FAILED
>
> Timestamp: 11/03/2016 6:03:10 PM
> Warning: There has been an error reading data for calendar: Home.
> However, this error is believed to be minor, so the program will
> attempt to continue. Error code: 0x80004005. Description: generation
> too old for for modifyItem

I only ever saw this with remote CalDAV calendars but yours appears to
be a local Lightning calendar.

Try setting itip.disableRevisionChecks=true in the advanced config:

https://bugzilla.mozilla.org/show_bug.cgi?id=581943#c8

--
Marcel Stör, http://frightanic.com
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[Philipp Kewisch]

On 3/24/16 12:36 PM, Marcel Stör wrote:
> On 13.03.16 19:58, james moffat wrote:
>> error: MODIFICATION FAILED
>>
>> Timestamp: 11/03/2016 6:03:10 PM
>> Warning: There has been an error reading data for calendar: Home.
>> However, this error is believed to be minor, so the program will
>> attempt to continue. Error code: 0x80004005. Description: generation
>> too old for for modifyItem
>
> I only ever saw this with remote CalDAV calendars but yours appears to
> be a local Lightning calendar.
>
> Try setting itip.disableRevisionChecks=true in the advanced config:
>
> https://bugzilla.mozilla.org/show_bug.cgi?id=581943#c8
>

I've had a user have this recently with a local calendar. I believe it
can happen for example if you open an event for editing, then maybe
dismiss an alarm then later save the event. There may be other similar
situations.

Philipp

[james moffat]

On Thu, 24 Mar 2016 22:51:03 +0100, Philipp Kewisch <moz...@kewis.ch>
wrote:

Thanks for the tips from everyone.
I will let you know if it works once I have time to fiddle around with
it.
me

[james moffat]

On Thu, 24 Mar 2016 12:36:40 +0100, Marcel Stör
<mar...@frightanic.com> wrote:

>On 13.03.16 19:58, james moffat wrote:
>> error: MODIFICATION FAILED
>>
>> Timestamp: 11/03/2016 6:03:10 PM
>> Warning: There has been an error reading data for calendar: Home.
>> However, this error is believed to be minor, so the program will
>> attempt to continue. Error code: 0x80004005. Description: generation
>> too old for for modifyItem
>
>I only ever saw this with remote CalDAV calendars but yours appears to
>be a local Lightning calendar.
>
>Try setting itip.disableRevisionChecks=true in the advanced config:
>
>https://bugzilla.mozilla.org/show_bug.cgi?id=581943#c8

OK I was able to make the modifications last night and tested the
program this morning on the new daily tasks.... here's a blow by blow.

clicked on 5 tasks to mark as completed waited 35seconds before the
task box redrew showing that 3 of the tasks had been marked as done.
at the 40 second mark the same error box as before once again popped
up saying that modification failed...... so no changes to the errors
after I changed the options described above.
Any other Suggestions?
thanks for your help
James

[gav...@gmail.com]

On Thursday, March 24, 2016 at 1:42:31 PM UTC+2, Marcel Stör wrote:
> Try setting itip.disableRevisionChecks=true in the advanced config:

Hi Marcel.

It was comforting to see your name pop up here, after reading your helpful responses on the Bugzilla forum. I can confirm that your suggestion has solved the MODIFICATION_FAILED problem on Thunderbird 38.8.0 and Lightning 4.0.5.2, running on Linux Mint 17.3 and Cinnamon 2.8.8 64-bit. It surprises me that such manual editing is still required at this mature stage of the software's life.

[Marcel Stör]

On 18.07.16 13:31, gav...@gmail.com wrote:
> It surprises me that such manual editing is still required at this mature stage of the software's life.

I'm afraid it's not as easy as you make it sound. Depending on the
calendar type (local/remote) and the context in which the calendar is
used it may be desirable to see such warnings. After all it intends to
tell you that the event you're currently editing/processing has been
edited by someone else (machine or human) in the meantime.