hello

I leads to an example of creating a card using Mapnik.
my simple is Simulator code to rundemo / C + +.
-------------------------------------------------- ------------------
         Map m (800.600);
m.set_background (color_factory: from_string ("white"));
m.zoomToBox (Envelope <double> (10, 10, 20, 20));

Image32 buf (m.getWidth (), m.getHeight ());
agg_renderer <Image32> ren (m, buf);
ren.apply ();
return 0;
-------------------------------------------------- ----------------------
this simple code crashes in the instruction
ren.apply ();
the manufacturer of projection
Call it an init ()
and just after leaving the manufacturer, it crashes

The debugger tells me the function basic_timed_mutex:: lock () in file
basic_timed_mutex.hpp that exists in
C: \ Program Files \ boost \ boost_1_42 \ boost \ thread \ win32

Is there anybody who can help me?
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