Btrieve: Invalid IndexDDF option in initialization setting. (Error 3336)

The setting for the IndexDDF value in the Btrieve key of the Windows Registry is not valid. The IndexDDF value determines the manner in which the Btrieve external ISAM database is to handle the INDEX.ddf file, which is updated whenever indexes are created or deleted.

Valid settings are:

• Require Index.ddf file is required in the database directory, in addition to File.ddf and Field.ddf.
  
  
• Maintain Updates the Index.ddf file if it exists, but does not generate an error if it does not.
  
  
• Ignore Makes no attempt to update the Index.ddf file, regardless of whether or not it exists.