Btrieve error 51 when converting CREWDUTY.BTR for 3.13
When running the crewduty.btr for 3.13 the user may get a Btrieve error51. This is due to the DDFs not being updated when the 3.13 installer ran.
Solution
1. Check the ddf files in the FOS Data folder - they should have a date of 11/16/22
2. If all of the ddf files do not have the updated date re run the FOS Installer as admin (this should update all ddf files)
3. Take the most recent .old crewduty file and rename the file crewduty.btr
4. Re run all converts associated with the 3.13 installer