NM: Notes app crash on one mailbox while searching for mail store (4325038)

Issue

The migration worker keeps crashing Notes just when the migration progress window appears, and it is connecting to the destination mail store.
What is causing this?  I do not believe the source Domino mailbox is corrupt.

  CMT version: x.x.x.x

  CMT Recovery mode is ENABLED in Exchange

  Last Occurrence (reverse) based Custom Mtg Processing is ENABLED

  Use ICAL for No End Date Pattern: DISABLED

  Log Identify Messages with: NoteID UNID

  Exchange Audit Option (ExAudit) is DISABLED

  Mapi retry count=9, delay=1.000000 seconds

  Retry Failed Document Limit=0

  Migrating to Main Mailbox

  Successfully copied BPOS profile

  Attempting to configure Message Service

 <CRASH>

Resolution
There is a problem on the Exchange side.  Notes Migrator cannot connect or find the Exchange mailbox for this user.
Make sure the Exchange Information is correct in the Notes Migrator person document.
Confirm the Exchange mailbox exists, is enabled and is not corrupt.

For 4.5 and lower versions
Confirm DisableMAPI registry entry set on the workers
How To Disable MAPI/HTTP Protocol For Outlook?