[Zope] DocFinder Installation problem on 2.2.4

[Loren Stafford]

When I try to install DocFinder 0.3 on Zope 2.2.4 (NT 4) I get the following
error. Do you know why?

-- Thanks
-- Lorem

  ImportError

Traceback (innermost last):
  File D:\Intranet\Zope224\lib\python\ZPublisher\Publish.py, line 222, in
publish_module
  File D:\Intranet\Zope224\lib\python\ZPublisher\Publish.py, line 187, in
publish
  File D:\Intranet\Zope224\lib\python\Zope\__init__.py, line 221, in
zpublisher_exception_hook
  File D:\Intranet\Zope224\lib\python\ZPublisher\Publish.py, line 171, in
publish
  File D:\Intranet\Zope224\lib\python\ZPublisher\mapply.py, line 160, in
mapply
    (Object: manage_addDocFinder)
  File D:\Intranet\Zope224\lib\python\ZPublisher\Publish.py, line 112, in
call_object
    (Object: manage_addDocFinder)
  File D:\Intranet\Zope224\lib\python\Products\DocFinder\construct.py, line
30, in manage_addDocFinder
  File
D:\Intranet\Zope224\lib\python\Products\ExternalMethod\ExternalMethod.py,
line 130, in manage_addExternalMethod
  File
D:\Intranet\Zope224\lib\python\Products\ExternalMethod\ExternalMethod.py,
line 178, in __init__
    (Object: analyseDocumentation)
  File
D:\Intranet\Zope224\lib\python\Products\ExternalMethod\ExternalMethod.py,
line 201, in manage_edit
    (Object: analyseDocumentation)
  File
D:\Intranet\Zope224\lib\python\Products\ExternalMethod\ExternalMethod.py,
line 210, in getFunction
    (Object: analyseDocumentation)
  File D:\Intranet\Zope224\lib\python\App\Extensions.py, line 217, in
getObject
    (Info:
('D:\\Intranet\\Zope224\\lib\\python\\Products\\DocFinder/Extensions/analyse
.py', 'DocFinder.analyse'))
  File
D:\Intranet\Zope224\lib\python\Products\DocFinder/Extensions/analyse.py,
line 1, in ?
  File D:\Intranet\Zope224\lib\python\Products\DocFinder\analyse.py, line
34, in ?
ImportError: No module named SecurityInfo