TemplateNotFound: Template "helloworld.html" not found

[admin]

How to Reproduce

While doing a GET operation on /helloworld, Trac issued an internal error.

(please provide additional details here)

System Information

Trac	0.11b1
Python	2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit (Intel)]
setuptools	0.6c7
SQLite	3.5.2
pysqlite	2.4.0
Genshi	0.4.4
Subversion	1.4.6 (r28521)

Python Traceback

Traceback (most recent call last):
  File "C:\Python25\Lib\site-packages\trac\web\main.py", line 398, in _dispatch_request
    dispatcher.dispatch(req)
  File "C:\Python25\Lib\site-packages\trac\web\main.py", line 217, in dispatch
    data, content_type)
  File "C:\Python25\Lib\site-packages\trac\web\chrome.py", line 651, in render_template
    template = self.load_template(filename, method=method)
  File "C:\Python25\Lib\site-packages\trac\web\chrome.py", line 635, in load_template
    return self.templates.load(filename, cls=cls)
  File "C:\Python25\Lib\site-packages\genshi\template\loader.py", line 214, in load
    raise TemplateNotFound(filename, search_path)
TemplateNotFound: Template "helloworld.html" not found

[Emmanuel Blot]

Submitted twice: #7907