I'm using RawTherapee 18.104.22.168 and have GIMP defined as the external editor. Each time export an image from RT into GIMP 2.8.6 I get the following message from GIMP:
"Warning: The image you are loading has 16 bits per channel. GIMP can only handle 8 bit, so it will be converted for you. Information will be lost because of this conversion."
Any ideas how to turn the warning off?