error -30 and error 90605

error#: -30 error#: 90605 Determining File Length file4len c:\CARS\ASOPTONS.DBF upload sticking on specific vehicles, received errors when attempted to compress vehicle data 1. Go to the C drive 2. Open cars folder 3. Delete the ASOPTON.DBF file 4. Replace the same file (ASOPTON.DBF) from your own computer 5. Advise rep to compress files, especially vehicle data files