Please use only Window Maker standard directory sructures. This means don't stick your titlebars in a directory under "~/GNUstep/Library/WindowMaker/Titlebars" and your Tiles under "~/GNUstep/Library/WindowMaker/Tiles". Please use ~/GNUstep/Library/WindowMaker/Pixmaps for all tiles and menu/titlebar images, ~/GNUstep/Library/WindowMaker/Icons for any icons you include and ~/GNUstep/Library/WindowMaker/Backgrounds for your backgrounds.