[Lejo]

Never heard of that kind of crash related especially to my map. In what kind of mission does that appear? Funny enough i made the experience the game runs best if started with "multiplayer/new server" even in a single mission. May be you'll try this. Apart from that it seems there are generally some problems due to the size or kind of the actors.static. I'm making a last attempt to solve this, and if it still doesn't runs properly the only solution will be splitting the file into a western and to a eastern part. It's just that nobody has any expierience with a such big and heavy populated map and the game still hides some of its secrets.

I did some tests today and your tip seems to be the solution!
I copypasted my dogfightmission from my Missions/Single Missions folder to the Missions/Net/Coop folder and started the game from Main Menu/Multiplay/Create New Server/Cooperative. Doing this I don't have the crash anymore after 20 minutes. So I flew around from Istria to Trieste and ended up in Innsbruck in about 50 minutes and meanwhile enjoying those realistic landscapes.
And after quitting my flight I don't have the other gamecrash to desktop like many others had.
Thanx for your assistance zipzapp.

Rollnloop: your tip worked as well. When I select my mission in the Single Mission option in the Main Menu I start recording my flight for a minute or two and can keep on flying as long as I want to. No crash anymore after 20 minutes and no crash to desktop when I press Exit. Problems seem to be solved now! Thank you too!