Analysis View Table Locking

Attain 3.01B MS SQL Server on Windows 2000 Has anyone experienced locking problems on the Analysis View Table with the Post Ship function in Warehouse Management. The following message appears intermittently, Another User has modified the record for the Analysis View after you retrieved it from the database. Enter your changes again in the updated window, or start the interrupted activity again. Identification fields and value Code=‘FULL’ The result is a Activity line still at Type “Ship” instead of Shipped, when the user tries again, the message “You cannot ship more than zero units appears” as the Sales Order Line has been updated but the update on the Warehouse Activity line has been incomplete. Any ideas?