Hello everybody, I am new to this forum and started using Open Rocket recently. I need to add a motor to the database and the references to how to do this in this forum are quite old and are not working for me. I got a test file from the Cesaroni website and placed it in C:\Users\UserId\AppData\Roaming\Open Rocket\Thrust Curves folder - it does not appear in the motor selection screen. I tried 7unzipping the jar file but under \datafiles\thrustcurves there is a single file with extension ser which I understand is a binary file. Opening the file in a text editor I can see it contains motor data but that was not what I expected. Is there a way to add additional motors to the database that I am missing?