The Archive Manager Event Log and/or the DataLoaderWorker.exe.log contains an error similar to the following:
 The system cannot find the path specified.
The Data Loader service cannot access a path it requires. This can be either the Attachment Store folder or the Export folder.
1. Run the Following SQL query on the Archive Manager SQL server:
SELECT [value] AS Path FROM config WHERE [key] = 'DataExportDirectory'
2. Make sure that the path in step 1 is a valid folder (not a file) and that the Access Control List (ACL) for the folder grants Full Control to the "ArchiveManagerServiceUsers" security group.
3. Run the Following SQL query on the Archive Manager SQL server:
SELECT RIGHT(s.connectionstring,LEN(s.connectionstring)-5) + '\' AS Default_Attachment_Store_Path from storagelocation AS S WHERE [default] = 1
4. Make sure that the path in step 3 is a valid share and that the ACL for both the share and the folder grants Full Control to the "ArchiveManagerServiceUsers" security group.
For more causes of Error:  please see SOL38693