We run a number of Zimbra servers here and on one of our servers we have a client reporting that sporadically they are getting a "Debug Assertion Failed! message."

Here are the details:
Client 6.0.5737.3
Server 6.0.3_GA_1912
Client is Outlook 2007, fully patched, running on Windows XP fully patched.

Yes, I do realize that it is time to upgrade the client and the server. But in the meantime, I would like to figure out what is happening.

I have read through bugzilla and this forum (most of the posts were from 2007 and 2008 and on earlier releases and that is why this is so strange that it is happening now).

Microsoft Visual C++ Debug Library
Debug Assertion Failed!

Program: C:\program files\microsoft office\office 12\outloook.exe
File: c:\src\gnr-603\mapi\src\sharingaddin\addin.cpp
Line: 1823

Expression: g_pAddinInstance

The client is remote right now so I cannot get any log files. I can always try to get those tomorrow. I am aware of some of the Macro and outcmd.dat and registray suggestions as well as checking on the sharing enabled option under Help---Disabled Items. Unfortunately none of those fixes are working.

Could this be easily fixed by installing a more recently Outlook Connector version? Would that work again an older server version (such as what we are running?