Problem with custom graphics

[SmileyCoder]

Im trying to load a jpg in the map editor to use as background image. The editor just freezes. Is there some dimensions the graphics must fullfull in order to be usable?

EDIT: I am using version 439 of map editor.

[CrazedSeal]

It has to be a certain width maybe, but height can be different. Not sure, just guessing.

[SmileyCoder]

That is my guess as well, problems is I can't seem to find any info on what the width should be (if any)

[knucracker]

The image should get scaled to 768 wide and proportions maintained.  What size is the image you are trying to use?  You can send it to me by mailing support at knuckle cracker dot com and I will see what the issue is...

[Grauniad]

Whoever maintains the custom map tutorial may want to add the map width (in pixels) to the tutorial.