Hi Ricardo, Thanks for the input. > I believe the error you reported on IRC comes from your definition of > “colorful-build-output-port”, which uses “current-error-port” instead of > “(current-error-port)”. Please correct this and then try again. I > expect the error to disappear then. Error disappeared but when i tried to rebuild hello, there were no errors at same time no colorful output even. I have attached the screen shot. Can you please check where I went wrong. ----- Sahithi