I am using the TA resolution shortcut under Win7 Pro SP1, and that worked perfectly for the entire ARM campaign. I am trying to play Core now and the first mission has extremely shaky and pixelating screen then crashes.

Any ideas?

I had the same issue. I think it's caused by the map for that particular mission being smaller than your game window (which was about 1920x1060 for me).

You can lower the resolution for that 1 mission (it's the only one with problems that I know of) or if you're being lazy (like I was) you can try to finish the mission without scrolling to the end of the map (I think that's when it crashed for me), and that would mean no scrolling at all probably.

Thanks. I almost beat it once that way, but a tank hid off the screen and my nearly dead units would not go after it. One nudge and crash. I will try resolution tweaks.