I am supposed to send some artwork to the printers tomorrow and their guidelines requires it to be CMYK.
I have installed the plugin Separate+ from the 'gimp-plugin-registy' package. I have also installed some ICC colour profiles from the 'icc-profiles' package.
When I try to use the Separate+ plugin all I can get it to output is an image that looks like the original but with the colours inverted.
How can I convert my image to CMYK?