One of the main files used by the system is missing. If you have a backup, use it as most likely some data has been lost. If you do not have a backup: Change to the \EZROUTE Directory. (cd \ezroute) Delete only the ALPHA.DBF file. (del alpha.dbf) Then, re-Install the system. The re-install will actually initialize the system and add all necessary main files. One or more may be empty of data. Then re-install if you are trying to update the system, to update it. Press any key.