Having a similar problem , seems to to be happening since the latest patch.
I know your mission ran fine because I started it and got just outside the first objective , found I needed sleep and saved.
Then last night the game updated.
Since then, when I load it up I get an error message - something about static objects missing and needing to open the mission in the editor and reconfigure it (if I get a chance I'll fire it up later and get the proper message)
Then when the game starts the first couple of objectives are showing as completed (which I've not done) and the only option is to storm the airfield (this is straight after dismounting from the insertion)
No-way of restarting the mission , it's as if the third objective is now the first (if that makes sense)
Now , as I know it ran fine before the patch - I can only assume the patch changed something within the mission making it unplayable. I'm really surprised that there haven't been more people saying this, it was a damn good mission and I was having fun with it till it broke.
