_viewer.so segfaults - svgfig2

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Build an SVG object 
2. Attempt to view it
3. ??
4. Segfault!

What is the expected output? What do you see instead?
Code sporadically segfaults, should draw to window. Output of build at 
http://pastebin.com/WWWxadbJ.

What version of the product are you using? On what operating system?

SVGFig2, compiled on 10.04 with...
libcairo2-dev                         1.8.10-2ubuntu1 
librsvg2-dev                          2.26.3-0ubuntu1
libpango1.0-dev                       1.28.0-0ubuntu2.2
libglib2.0-dev                        2.24.1-0ubuntu1
libatk1.0-dev                         1.30.0-0ubuntu2.1
libgtk2.0-dev                         2.20.1-0ubuntu2
python-gtk2-dev                       2.17.0-0ubuntu2


Please provide any additional information below.

Replacement _viewer.py - http://pastebin.com/bVNyBiw9
Patch to svg.py - http://pastebin.com/swtRi8cj

Original issue reported on code.google.com by [email protected] on 2 Aug 2011 at 5:16