Error: "Unable to read task document from QMS server" (4234978)

When trying to create a gathering you get an error similar to the following:

"The following serious error has occurred:

Unable to read task document from QMS server. Cannot open file
"C\PROGRA~2\QUEST~1\MESSAG~1\tasks\F1B4BD9F5245FC4084561A318257C11B.task.data2.data. The process cannot access the file because it is being used by another process

Please close and restart the MessageStats console"

Purge all of the gathering tasks from the database and recreate them.

Please use the instruction in the following solution to purge all of the gathering tasks:
https://support.quest.com/SolutionDetail.aspx?id=SOL32186