Hi, With beta 2011.01.10 17:55, the chart module is broken. For this minimal example: \usemodule[chart] \starttext \startFLOWchart[example] \startFLOWcell \name {flow} \location {1,1} \text {Flow} \connection [rl] {chart} \stopFLOWcell \startFLOWcell \name {chart} \location{2,1} \text {Charts} \stopFLOWcell \stopFLOWchart \FLOWchart[example] \stoptext I got the error: (virtual://viafile.1) (virtual://viafile.2) (virtual://viafile.3 ! Undefined control sequence. \asciia ...LOLrulethickness ; connect_\cFLOWfrom_ \cFLOWto (\FLOWfrom ,\zFLO... \dostartMPdrawing ...data {\MPdrawingdata \asciia }\egroup \dodoFLOWconnectionC ...ace [0,0,0]\stopMPdrawing \fi \fi \fi \ignorespaces <argument> ...text {Flow} \connection [rl] {chart} \startFLOWcell ...FLOWconnectionC \ignorespaces #1 \unskip l.6 \stopFLOWcell ? -- Best regards, Li Yanrui