[dev-context] mkiv and metapost

Hi, Something is broken in the interaction between metapost and mkiv. The minimal example here gives me an empty pdf. \starttext \startMPcode draw fullcircle scaled 1cm; \stopMPcode \stoptext The metapost figure is created, but for some reason not is not being included. Doing an explicit \externalgraphics[filename-mpgraph.1] gives mp-test-mpgraph.1 !luaTeX error: internal error: unknown image type ==> Fatal error occurred, no output PDF file produced! I am using luatex snapshot-0.23.0-2008031110 and ConTeXt 2008.03.04 Aditya