Cannot Check In objects in Windchill with empty error message

​​Cannot check in objects, receives empty error message

​Critical family table error 20510 exist on the Windchill server

  1. First heal the 20510 family table error on the Windchill server using WCTK FTHealer

  2. Revise the family table, both the generic and the instances

  3. Check out and verify the family table

  4. Check in the family table

  5. Alter the state of the instances, should they be in Released or In Work? Remember to always Verify all the instances whenever the generic is changed