Won't launch under certain gfx resolutions

[Delerium]

If I launch the game under 1680x1050 I get an error saying that Everquest encountered a problem and needs to shut down. If I change the ini file to 1024x768 and change my desktop to match, I can then log in and change the resolution in game back to 1680. 1680 will only work fullscreen and not windowed.

Any thoughts? Some magical change I need to make in my ini file?

Cheers,
Delerium (Beck the Bard)