I've set up a Nautilus-Action menu item and it works perfectly, except for the fact that I can't get the icon to show up in the menu. I've tried the same icon in the formats .ico, .png, .bmp, .tiff and .jpg without success. For each icon change I've saved the menu item and run
nautilus -q in the terminal. In all cases the menu item appears without an icon. I know the menu can display icons, because the top menu item "Open With Shotwell Photo Viewer" displays the Shotwell logo.
Does anybody have any idea why the icon doesn't show up?