You cannot open this database because the data file or one of its segments is locked.

This error can indicate one of two issues:

1. The user does not have full access to the Freezerworks folder. Give full control permissions to the Freezerworks folder and all its contents, or right-click on the Freezerworks icon and run the program as administrator.
2. If on a server, this can mean the Freezerworks Server service is already running when attempting to start the Freezerworks Server application. Confirm all users are logged out of Freezerworks and stop the service before running the server application.