[NTG-context] multitone color problem

Hi, just playing around with spot colors and run into this problem. tested with 23.04.2012 and ??.11.2011, same result. the color definition leads to an invalid pdf. % multitone.tex---- \nopdfcompression \setuppagenumber[state=stop] \definemultitonecolor[combicolor] [blue=.12,yellow=.28] [c=.1,m=.1,y=.3,k=.1] \starttext \null \stoptext %------------------ I also attached the original example (spot.tex). Best wishes, Peter