DBFCDX/1055 DBF Signature Invalid Explanation: This error indicates that the signature field of the .dbf is invalid. Reasons for this error include: 1. Trying to use a non-DBF file as a .dbf. 2. Corruption of the .dbf. 3. Trying to use a file with a .dbt memo-field. Action: Recreate the .dbf as a valid CA-Clipper .dbf