embed in wx, can't zoom horizontally

Hi, I'm using matplotlib 0.84 on Windows XP, Python 2.4 WxWidgets 2.6.1 w/
numarray.

I'm embedding in a wxPython app, following the example in embedding_in_wx.py in
the examples directory. This app shows the same problem. I can use the + -
keys to zoom into the graph vertically, but when I try the horizontal buttons:

I'm getting the message:
Line2D instance has no attribute 'set_xclip'
(whole log is below.)

The zooming is actually happening, If I force a refresh of the app, the zoom
happened, but because of the exception the screen update doesn't happen
automatically.

Is there a quick fix I could do for now? (besides commenting out the offending
line?)

Thanks,
-Jim Carroll

Traceback (most recent call last):
  File "matplotlib\backends\backend_wx.pyo", line 1858, in _onLeftScroll
  File "matplotlib\backends\backend_wx.pyo", line 1811, in panx
  File "matplotlib\axes.pyo", line 2111, in panx
AttributeError: Line2D instance has no attribute 'set_xclip'
Traceback (most recent call last):
  File "matplotlib\backends\backend_wx.pyo", line 1866, in _onXZoomIn
  File "matplotlib\backends\backend_wx.pyo", line 1825, in zoomx
  File "matplotlib\axes.pyo", line 3598, in zoomx
AttributeError: Line2D instance has no attribute 'set_xclip'
Traceback (most recent call last):
  File "matplotlib\backends\backend_wx.pyo", line 1866, in _onXZoomIn
  File "matplotlib\backends\backend_wx.pyo", line 1825, in zoomx
  File "matplotlib\axes.pyo", line 3598, in zoomx
AttributeError: Line2D instance has no attribute 'set_xclip'