NetGore

Alright, I'm trying to get this image

http://img143.imageshack.us/img143/3213/loretiles.png

Into my map editor as a Grh, so I placed it into the folder C:\NetGore\DemoGame.Client\bin\Content\Grh, ran the mapeditor, right clicked the Grhtree and selected automatic update, says no new Grh's. so i tried converting it to a .bmp, no luck, then I tried placing it into the Grh/Maps/Lore folder, no luck, then i tried in the Maps/Desert folder, no luck...

How am I supposed to add an Image as a Grh? Im either just retarded or this is a bug.