Hi mbattcock,
You probably downloaded updates to ships that you did not have. When you ask for help, you should give details:
What are the names of the ships? What are the names of the packs?
Do you have the New Horizons add-on or the Collector’s Edition?
Have you purchased any ships from the Shipyard?
The Packs only update ships that you already have.
Regards,
Marty