FSX Crazy cursor plus main panel vanishes

[Don W.]

Having a problem in FSX  My main screen (3-1680x1050 monitors for 5040x1650 on Triple Head to Go) is used for 3D out the window view. However when I try to use a resolution above 3840x1024 in fullscreen mode the main panel disappears and the mouse pointer becomes a crazy flashing cursor/hourglass. It also happens in windowed view if I try to stretch the main window past about 3/4 of the 3 monitor width. I have to restart FSX. I did not have this problem in FS9.
Nvidia GTX460 video card with latest drivers, latest TH2G drivers.

[Porchpup]

The quick, simple answer is to not use (or ever open) the 2D cockpit view. Try this experiment, load any plane in free flight mode.
You should start off in the Virtual Cockpit (3D) view. If you scroll through the different cockpit views ("A" key on the keyboard), you should notice the mouse pointer start going crazy once you get to the 2D view.
This is the view where the control panel disappears and turns into a blank, black box with only the top 1/3 screen showing the out of the window view.
Is this what you are talking about?