Manually running Regather Structure fails. When you click the View Log button, the following error is shown: "The following error occured in the initialization of a processing component: Unknown data processor"
The Organization Structure task is corrupted
WORKAROUND 1:
Use instructions in the following solution to delete all existing tasks and recreate them: https://support.quest.com/Search/SolutionDetail.aspx?id=SOL32186&category=Solutions&SKB=1
WORKAROUND 2:
Create an Exchange Organization Structure task to run daily before any other gatherings are scheduled to run:
1. From the MessageStats console, expand Exchange Organizations
2. Right click your Organization name and select Create Task
3. Name the task Organization Structure and from the drop down box select the Exchange Organization Structure task template
4. Schedule the task to run daily before any other gatherings are scheduled to run
