Hi, the following code has been working before: \starttext \startMPpage[instance=decimalfun] draw function(1,"x","x*sin(x)",0.5,1,1/100) scaled 1in; \stopMPpage \stoptext Now (with an updated ConTeXt) I get an error: metapost > loading 'metafun' as 'metafun.mpxl' using method 'decimal' metapost > initializing number mode 'decimal' metafun > log > metafun > log > error: Missing ')' has been inserted metafun > log > metapost > log > <to be read again> metapost > log > ( metapost > log > <scantokens> x*sin( metapost > log > x) metapost > log > <to be read again> metapost > log > ) Maybe I have done something wrong earlier, but I cannot see any unmatched parenthesis now. /Mikael