TestFlight saves the engine error status in the .craft files.
Therefore, the error is set on the engine of every newly built rocket right at the launchpad.
I developed a rocket in VAB and ran simulations with TestFlight enabled. During these simulations, an ignition error occurred, which is now saved in the .craft file.
Every new rocket built and launched with this setup will have the ignition error set right at the launchpad.
