I haven't seen this issue.  It may just be a dirty compilation problem. 
  Often distutils doesn't rebuild enough.  Try removing the build 
directory and then build/install.

If that's not the case, we'll need to track down which font is tripping 
it up.  Set "verbose.level" to "debug-annoying" and then send us the output.

Cheers,
Mike

Jörgen Stenarson wrote:
> Hi
> 
> today after upgrading to the latest svn (r4880 compiled with mingw) and 
> deleting fontManager.cache I got the following message and a crash
> 
> c:\python\>python
> Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)] on 
> win32
> Type "help", "copyright", "credits" or "license" for more information.
>  >>> import pylab
> Assertion failed: ob_refcnt == 0, file CXX\cxx_extensions.cxx, line 1128
> 
> This application has requested the Runtime to terminate it in an unusual 
> way.
> Please contact the application's support team for more information.
> 
> restoring my old fontManager.cache I can successfully use matplotlib.
> 
> c:\python\>python
> Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)] on 
> win32
> Type "help", "copyright", "credits" or "license" for more information.
>  >>> import pylab
>  >>>
> 
> 
> I tried backdating matplotlib 40 revisions and got the same result. So 
> it is not a new problem.
> 
> Any one else seeing this?
> 
> /Jörgen
> 
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-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

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