[StarGazer]

Thanks for the file Stargazer but alas I still end up back at one mission completed.

That's a bummer.

I don't know what else to advise.

One thing did come to mind when you said you were unable to edit the .ini file and that is that you may have a system problem somewhere that might be compounding the problem of not being able to write the completed mission to file. Just a guess.

just to recap:

Everything else works fine for you as I understand it. For example, you can open up a different map in the mission builder, make a mission and save it?

The appropriate mod activator installed.
The appropriate aircraft installer installed.
The FW-190_A-3 installed.
The Spitfire9_early installed.
The Tigermoth installed.

Hope you get it to work but there is one solution on the horizon and that is that the new CAN_Channel map is about to arrive shortly.

cheers