Sturmovik Campaign Problems - Help please

[Chief_Biv]

I am enjoying this campaign at can recommend it to people learning the A-10C. However, I have had a problem in not being able to complete two of the missions and I have no idea if the missions are bugged or I am missing something. Can anyone help?

The two missions are as follows:

Mission 10 - On Duty. Despite killing every detectable blue force unit, reporting it in, and then egressing as ordered. Upon crossing the threshold to land I receive the message "You have left the battle area - Mission Failed". I have tried to do this carefully 3 times with the same result.

Mission 12 - The Return. Spoiler alert. As ordered I kill the Su-23 Shilka and the Strella. Next I take out the truck mounted AA near the terminal. I am then asked to take out the two Humvees. I use the Gun on these two. The problem is that as soon as the second HMV is critically damaged I get the message "Spetnaz group destroyed - Mission Failed". I have done failed this mission 3 times and I have no idea why killing the second HMV is causing the mission fail.

Is there anybody at ED maintaining this campaign that can check on this?