Hi,
I think I have never encountered this problem. Recently, I can no longer have a succession of figures with Metapost; only the first one appears.
Thanks.

Fabrice

\starttext
\dorecurse{3}{\startMPcode
            numeric u;
            u = 0.5cm;
            ymax = xmax = 7;
            xmin = ymin = -1;
            interim ahangle := 30;
            z0 = (1u,1u);
            z1 = (2u,3u);
            z2 = (0,5u);
            path xx, yy;
            xx = ((xmin,0) -- (xmax,0)) scaled u;
            yy = ((0,ymin) -- (0,ymax)) scaled u;
            drawoptions(scaled .5 withcolor .7 white);
            for i = ceiling ymin upto floor ymax: draw xx shifted (0,i*u); endfor
            for i = ceiling xmin upto floor xmax: draw yy shifted (i*u,0); endfor
            drawoptions();
            path fuzz;
            fuzz = z0 -- z1 -- z2 -- cycle;
            fill fuzz withcolor 0.7[blue,white];
            draw fuzz withcolor blue;
            fill fuzz shifted(4u,1u) withcolor 0.7[blue,white];
            draw fuzz shifted(4u,1u) withcolor blue;
            drawoptions(withpen pencircle scaled 1pt);
            drawarrow z0 -- z0 shifted (4u,1u);
            drawarrow z1 -- z1 shifted (4u,1u);
            drawarrow z2 -- z2 shifted (4u,1u);
            drawoptions();
            label("\im{\vec{v}}", (3.5u,3u));
            label.llft("\im{A}",z0);
            label.lrt("\im{B}",z0 shifted (4u,1u));
           
          \stopMPcode}

       
\stoptext