Hi, when I run this example ... \setupcolors[state=stop,conversion=never]%needed for specific reason in project \startuseMPgraphic{Test} z1 = (-233,0) ; z2 = (-220,22) ; fill z1 for i=2 upto 2: .. z[i] endfor .. z1 & cycle ; \stopuseMPgraphic \defineoverlay[TTest] [\leftaligned {\scale[height=\overlayheight]{\useMPgraphic{Test}}}] \starttext \framedtext[frame=off,loffset=1em,roffset=1em,background=TTest]{\input knuth\par} \setupTABLE[frame=off,offset=1ex] \setupTABLE[row][each][align={middle,lohi}] \bTABLE \bTR \bTD[nr=3,background=TTest] drei \eTD \eTR \eTABLE \stoptext ... I get this error: ! LuaTeX error ...text/tex/texmf-context/tex/context/base/colo-ini.lua:461: bad argument #2 to 'format' (string expected, got nil) stack traceback: [C]: in function 'format' ...text/tex/texmf-context/tex/context/base/colo-ini.lua:461: in function 'mpcolor' ...text/tex/texmf-context/tex/context/base/colo-ini.lua:792: in function 'mpcolor' <main ctx instance>:1: in main chunk. system > tex > error on line 25 in file MP_MkIV.tex: LuaTeX error ... 15 \starttext 16 17 \framedtext[frame=off,loffset=1em,roffset=1em,background=TTest]{\input knuth\par} 18 19 \setupTABLE[frame=off,offset=1ex] 20 \setupTABLE[row][each][align={middle,lohi}] 21 \bTABLE 22 \bTR 23 \bTD[nr=3,background=TTest] drei \eTD 24 \eTR 25 >> \eTABLE 26 27 \stoptext 28 29 \ctxcommand ...\directlua \zerocount {commands.#1} <inserted text> ...:=\MPcolor {\overlaylinecolor } ; BaseLineSkip:=\the \base... \processMPgraphic ...e ;\!!es , \MPaskedfigure )}} \egroup \placeMPgraphic \d... \handleuseMPgraphic ...hics \processMPgraphic {#3} \endgroup \douseMPgraphic ...{\@@MPG \currentMPgraphicname } \empty \endMPgraphicgroup <to be read again> } ... l.25 \eTABLE ? Process aborted The problem is the usage of "conversion=never" ... but I need this for other reason in my project. Any help? Steffen