Yes, RollerBall, the Mitchell in 'virtual', landing in windy conditions, gives a whole new meaning to 'sense of motion' :)
Wasn't actually losing sleep over the 707 - but I'd still like to have it on my machine in working order. I can now confirm that it downloads OK. But the bad news is that, IMO, it is still a 'dog' - several glitches and one pretty basic design fault.
1. I tend to engage 'heading hold' quite soon after takeoff, so that I can concentrate on getting the trim and power and rate of climb right. As Gypsy_Baron pointed out, this involves 'flying blind' while you call up the autopilot. You THEN find that clicking the pointer round to 'HDG' just doesn't work! I finally solved that problem by using the old 'Ctrl-H' key command, and thankfully got back to an 'outside view' before I actually crashed!
2. Then came the NEXT problem. I got the trim and rate of climb roughly right, and switched to autopilot view again. There is a 'rate of climb' wheel on the autopilot, but that doesn't work either (well, more accurately, you never find out whether it works or not!). When you run the mouse over it, + and - signs appear, but there is no 'readout' as to what rate of climb you are setting, or whether it is 'setting' anything at all.
3. So you give up on the autopilot and dive back into the pilot's seat and go back to flying visual. The next thing that happens is that the 'icing' warning starts blinking. You go 'blind' again, call up the overhead panel, and switch on the de-icing - but the blasted light goes ON blinking at you....
4. I finally made it up to 15,000 feet and thought I'd try the autopilot again - just to the extent of switching on the 'altitude hold'. As soon as I did this all four engines died on me! I gave up at this point, I don't know whether the two events were connected or whether two glitches occurred together.
5. For some reason, you can only go from the lefthand seat to the righthand one via the Engineer's panel. I can't see why you would want to go to the second pilot's seat anyway, though......
Anyway, my verdict so far is, 'Shows promise, must work harder..."

A working autopilot in a sub-panel would make all the difference - but at the moment it is just about unflyable unless you fly 'visual' ALL the time.
I'm beginning to think that the best thing about this download - apart from the fact that the aeroplane looks great - is that it is pretty straightforward to delete it!