Code:
<ImageStyle Name="thurgadin_prestige_home" displayname="Thurgadin Grand Hall" zonerect="-1105, -103, 257, 919">
<ImageFrame Source="images/maps/map_thurgadin_prestige_home.dds " SourceRect="0,0,1600,1200" />
</ImageStyle>
You DID have your values swaped, a SourceRect can never have a negative number.
You did refer to a map that donīt exist, "images/maps/map_exp_07_thurgadin_velious.dds" is a hardcoded map and donīt exist on your computer unless you created it by your self.
I have corrected the code if you have the new image in the image folder, and has the resolution 1600,1200 , or you can just change the code.