Exception raised when drawing many circles

I draw circles with the function Line.DrawTransform() and at one moment, this
function raises an access violation exception.

If I send the same data to
Device.DrawUserPrimitives(PrimitiveType.LineStrip), no exception occurs.

Furthermore, the exception seems to occur when a given number of segments
has already been drawn through several calls to Line.DrawTransform() during
the frame. If I catch the exception and recreate the Line object in order to
continue the drawing and if I keep on adding circles, more and more
exceptions will be raised during the frame (roughly proportional to the total
number of vertices sent).

I have generated a playable stream with PIXWin that exhibits this problem.
Just tell me where I should post it.

--
Olivier Lauffenburger
Missler Software
.

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