The following is from "http://user.sgic.fi/~tml/gimp/win32/" the gimp
and ethereal both use gtk+ so I suspect this will also solve your
problem.
-Andrew
256-colour mode doesn't work, and GIMP will not start if you try. Use
at least HiColor (thousands of colours, 16-bit colours). (Stick to
Paintbrush if you feel like complaining about that.) TrueColor
(millions of colours, 24- or 32-bit colours) is a must for serious
work, of course.
Many people with ATI Rage Pro cards have complained about display
errors. It seems that this is a known problem with the drivers for
these cards, and can be worked around by setting DEVBMP=0 in the
[display] section of the Windows system.ini file, like this:
[display]
DEVBMP=0
If you have NT 4, and a Microsoft Wheel Mouse, some people tell me
GIMP hangs unless you remove the mouse icon from the taskbar. Go
figure.
"Warren Harmon" <wharmon@xxxxxxxxxxx> writes:
> I have installed Ethereal under Windows NT (4.0 sp 6). When I run it I get
> this error: "Gdk-ERROR ** Paletized display (256-colour) mode not supported
> on Windows. aborting", followed by a Microsoft Visual C++ Runtime Library
> error.
>
> I checked, and yes, my display is set to 256-color mode. What do I need to
> set it to instead?
>
> - Warren Harmon
> System Administrator
> OnQ Technologies, Inc.
> wharmon@xxxxxxxxxxx
>
>
>
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--
-Andrew Feren
Cetacean Networks, Inc.
Portsmouth, NH