[Visualpython-users] Problem with visual.graph

[Markus W. <mw...@gm...>]

Hi!

I installed VPython on Ubuntu Linux (Breezy) via synaptic 
(python-visual 3.2.1-1build1). Everything works fine, but when
I want to use visual.graph (e.g. graphtest.py in the examples
directory) I get the following error message:

Traceback (most recent call last):
  File "graphtest.py", line 8, in ?
    oscillation = gdisplay(xtitle='t', ytitle='Response')
  File "/usr/lib/python2.4/site-packages/visual/graph.py", line 192, in __init__
    currentdisplay.select()
RuntimeError: boost::bad_weak_ptr

Does anyone know what's wrong and how to solve this?

Regards, Markus