[Tickets #12441] JS error during mailbox loading

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Ticket URL: http://bugs.horde.org/ticket/12441
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  Ticket             | 12441
  Created By         | roshansemba+hordebugs at gmail.com
  Summary            | JS error during mailbox loading
  Queue              | IMP
  Version            | 6.1.2
  Type               | Bug
  State              | Unconfirmed
  Priority           | 2. Medium
  Milestone          |
  Patch              |
  Owners             |
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roshansemba+hordebugs at gmail.com (2013-07-09 19:27) wrote:

This seems to be a recurrence of http://bugs.horde.org/ticket/9766

With a just-updated version of IMP 6.1.2, loading a specific mailbox  
folder causes the error message "Uncaught TypeError: Cannot set  
property 'VP_rownum' of undefined" to appear on the JS console.  The  
contents of that mailbox folder isn't displayed.  The folder has over  
4500 messages in it.

The complete stack trace:

Uncaught TypeError: Cannot set property 'VP_rownum' of undefined  
viewport.js?v=5e98e6c9c4aa9cc91ffb4a1defbcb044:1492
(anonymous function) viewport.js?v=5e98e6c9c4aa9cc91ffb4a1defbcb044:1492
_each prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:1415
each prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:846
Class.create.update viewport.js?v=5e98e6c9c4aa9cc91ffb4a1defbcb044:1491
Class.create._ajaxResponseDo  
viewport.js?v=5e98e6c9c4aa9cc91ffb4a1defbcb044:843
Class.create._ajaxResponse viewport.js?v=5e98e6c9c4aa9cc91ffb4a1defbcb044:819
Class.create.parseJSONResponse  
viewport.js?v=5e98e6c9c4aa9cc91ffb4a1defbcb044:807
DimpBase.tasksHandler dimpbase.js?v=5e98e6c9c4aa9cc91ffb4a1defbcb044:3707
(anonymous function) dimpbase.js?v=5e98e6c9c4aa9cc91ffb4a1defbcb044:4010
(anonymous function) prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:417
(anonymous function) prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:6753
fireEvent_DOM prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:6613
fire prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:6602
_methodized prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:456
HordeCore.doActionComplete hordecore.js?v=2c0fc24b3d3038317dc51c05339856d0:231
(anonymous function) hordecore.js?v=2c0fc24b3d3038317dc51c05339856d0:85
Ajax.Request.Class.create.respondToReadyState  
prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:1806
Ajax.Request.Class.create.onStateChange  
prototype.js?v=2c0fc24b3d3038317dc51c05339856d0:1749

And here's the last AJAX request/response

Request URL:https://mailserver/webmail/services/ajax.php/imp/viewPort
Request Method:POST
Status Code:200 OK

Request Headers
Accept:text/javascript, text/html, application/xml, text/xml, */*
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8,de;q=0.6,de-CH;q=0.4
Connection:keep-alive
Content-Length:204
Content-type:application/x-www-form-urlencoded; charset=UTF-8
Cookie:userhash=USERHASHREDACTED; PHPSESSID=REDACTED;  
horde_secret_key=REDACTED; default_horde_view=auto; Horde=REDACTED
DNT:1
Host:mailserver
Origin:https://mailserver
Referer:https://mailserver/webmail/imp/dynamic.php?page=mailbox
User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML,  
like Gecko) Chrome/29.0.1547.15 Safari/537.36
X-Prototype-Version:1.7.1
X-Requested-With:XMLHttpRequest

Form Data
viewport:{"view":"SU5CT1guT2xkQXJjaGl2ZQ","initial":1,"after":144,"before":96,"slice":"1:241"}
view:SU5CT1guT2xkQXJjaGl2ZQ
token:REDACTED
Response Headersview source
Cache-Control:no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Connection:Keep-Alive
Content-Encoding:gzip
Content-Length:1294
Content-Type:application/json
Date:Tue, 09 Jul 2013 19:09:44 GMT
Expires:Thu, 19 Nov 1981 08:52:00 GMT
Keep-Alive:timeout=5, max=100
Pragma:no-cache
Server:Apache/2.2.22 (Ubuntu)
Set-Cookie:Horde=kuuttiqsjjvv11u7ma8d0mfgc0; path=/;  
domain=mailserver; HttpOnly
Vary:Accept-Encoding
X-Powered-By:PHP/5.3.10-1ubuntu3