And this is the exception:

Templating Error

<type 'exceptions.UnicodeDecodeError'>: 'ascii' codec can't decode byte 0xc3 in position 0: ordinal not in range(128)

Debugging information follows

Full traceback:
Traceback (most recent call last):
  File "/Users/shammash/src/ai/bugs/roundup/cgi/client.py", line 1125, in renderContext
    result = pt.render(self, None, None, **args)
  File "/Users/shammash/src/ai/bugs/roundup/cgi/engine_jinja2.py", line 78, in render
    return self._tpl.render(c).encode(client.charset, )
  File "/usr/local/lib/python2.7/site-packages/jinja2/environment.py", line 894, in render
    return self.environment.handle_exception(exc_info, True)
  File "/Users/shammash/src/ai/bugs/demo/html/issue.item.html", line 1, in top-level template code
    {% extends 'layout/page.html' %}
  File "/Users/shammash/src/ai/bugs/demo/html/layout/page.html", line 19, in top-level template code
    {% block page_content %}
  File "/Users/shammash/src/ai/bugs/demo/html/layout/page.html", line 44, in block "page_content"
    {% block content %}
  File "/Users/shammash/src/ai/bugs/demo/html/issue.item.html", line 67, in block "content"
    <pre>{{ msg.content.hyperlinked() }}</pre>
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 0: ordinal not in range(128)