If you are encountering the following connection error messages when you are attempting to run QE:
This is because QE cannot find the Database PC.
Please make sure the FastCAM QE Database server is up and running, along with the Pervasive Database Engine services.
If you are running QE in a network environment and have a dedicated QE Database server, the server may need to be restarted and it may also require the Pervasive Database Engine Services to be restarted manually.