Does each workstation running the app work OK when the others are not running the app? Can you connect as Administrator on all workstations and verify same problem happens? Is Norton AntiVirus being run on any/all computers? Other than that, I am as stumped as you are.

>Yes all have modify rights (all rights but not full control)
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>>Do all workstations/users have necessary privileges on Win2k Server shared folder where the DBC and tables are? Connect as Admin from all workstations and see if you get same bad results.