Hi Gittardood,

Sorry you're having issues. This is an unexpected bug for sure. We are looking into it further now.

Does the engine only cut out for you when starting cold/dark?
What about starting on runway?
PC or Xbox?
Do the cockpit controls function? Is there interactability with controls in FS24 after the upgrade?

In the meantime I recommend you uninstall the He 111, enable again in My Library. Make sure you are enabling the FS24 version and that the version number is 1.0.0. Then restart your sim.
Sometimes there are cache issues and still might be using the old FS20 package without a restart.

Thanks for your patience.