64   Unable to complete verify during check error code

Source:  GroupWise Check utility (GWCheck).

Explanation:  GWCheck cannot verify the library database (dmsh.db) in the post office.

Possible Cause:  The library database is damaged.

Action:  Perform a structural analyze/fix on the library. See "Analyzing and Fixing Library and Document Information" in "Databases" in the GroupWise 6.5 Administration Guide.