title: VPython Error on Ubuntu 11.10
body: <p>I get an error when trying to use <a href="http://vpython.org/contents/download_linux.html" rel="nofollow">VPython</a> on Ubuntu 11.10. I installed the program using the Ubuntu Software Center. All the additional instructions that I've found are either for much older versions or confuse me. What do I need to do in order to use VPython? I am running Python 2.7.2.</p>
  
  <pre><code>neil@neilcomp:~$ python
  Python 2.7.2+ (default, Oct  4 2011, 20:06:09) 
  [GCC 4.6.1] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; from visual import *
  &gt;&gt;&gt; sphere()
  
  (python:26388): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
  
  (python:26388): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
  
  (python:26388): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
  
  (python:26388): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
  
  (python:26388): GdkGLExt-WARNING **: Cannot open \xa0\u0003G\u0001
  
  (python:26388): GdkGLExt-WARNING **: Cannot open P\u000d\x99\u0001
  
  glibmm-ERROR **: 
  unhandled exception (type std::exception) in signal handler:
  what: Unable to get extension function: glCreateProgramObjectARB even though the extension is advertised.
  
  Trace/breakpoint trap
  </code></pre>