Hi

I have a problem with mapscale. It returns me error

player: maptransform.cc:202: virtual int MapTransform::ProcessMessage(QueuePointer&, player_msghdr*, void*): Assertion `data' failed.
Aborted

when i try to view it in playerv.

My config file is as follows

==============================
driver
(
  name "mapfile"
  provides ["map:0"]
  filename "cave.png"
  resolution 0.05
  negate 0
)

driver
(
  name "mapcspace"
  provides ["map:1"]
  requires ["map:0"]
  robot_shape "circle"
  robot_radius 0.5
)

driver
(
  name "mapscale"
  provides ["map:2"]
  requires ["map:0"]
  resolution 0.01
)

could anyone please advice.  I am using player 2.1.1 and stage 3.0.1

Thanks and Best Regards
Hengxin