hi, I tried use the "mptopdf" command to convert a figure generated by "mpost" into a .pdf file, and got following error: !pdfTeX error: pdftex.exe (file ec-lmr12): Font ec-lmr12 at 600 not found ==> Fatal error occurred, no output PDF file produced! The figures are generated from following metapost file: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% beginfig(2) label("Haha", (2,0)); draw (for i=0 upto 7: dir(135i)-- endfor cycle); endfig; beginfig(5) label(btex Haha etex, (2,0)); draw (for i=0 upto 7: dir(135i)-- endfor cycle); endfig; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% But the ec-lmr12 file exists and can be located with "kpsewhich". It seems the problem is the "btex etex" environment, because there is no error with the first figure. I work under the mswin-context-standalone downloaded from Pragma-ADE, appreciate for any tip!