Installation error: component.xml

Hi.
I just installed DirectoryStorage in Zope, following the instructions
from the website.

But, when i tried the step number 11, Zope gave me the error:

% bin/runzope
Error: schema component not found
   Package name: 'DirectoryStorage'
   File name: 'component.xml'
   Package path: ['/usr/local/Zope/lib64/python/DirectoryStorage']
For help, use /usr/local/Zope/lib/python/Zope2/Startup/run.py -h


I found a "component.xml" file in the source of DirectoryStorage,
but nothing in the installation directory
  PATH_TO_ZOPE/lib64/python/DirectoryStorage

I copied the file, and Zope started ok. And now everything seems to
work.

What was the problem??

Thanks,

Hugo


ps: Python 2.3.4, Zope 2.8.4.


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