I understand that you are having trouble opening the “HL-20 Project with Optional FlightGear Interface” example. The “openProject” function takes the project path as an input. The error you are facing is because the “HL-20 Project” is not present in your current folder path.
To run the example, I would suggest you to open the project after running the following command.
openExample('aeroblks_hl20/HL20ProjectWithOptionalFlightGearInterfaceExample')
This will change the directory to where the project is located and open a live script to run the example.
Please find below the relevant documentation for your reference:
I hope this answers your question!
