I have EZDOC Version 1.15 . Windows 8.1. When I open FSX  and sitting on the runway after setting up the auto pilot sometimes my controls will give out, sometimes the cameras don't work. Everything may work at the beginning, but after a long flight when I'm getting ready to land, I disengage the auto pilot and again no controls. Not so much so on a shorter flight. If I'm flying a plane like My Alabedo Super Sport there is usually no problem. I've had My settings on both Windows 7 and XP SP3 compatibility mode, Windows 7 seems to work better. It's always on Administrator Rights.

 

Check your settings are the same as instructed within the setup instructions.

Its a known talked about issue in the Win8 forum. Does the same for me once and a while but not too often.

 

If it happens CtrlShiftEsc, then force close EZCA.exe, then restart EZCA.exe, will fix it for me every time.