[Zope] ImportError of SheetProviderContainer

[Smith, RyanX]

After trying to install LoginManager 0.8.6 (I was told that 0.8.8b1 was
broken for Zope 2.3) I got the following error:
Traceback (innermost last):
  File "/home/zopeadmin/zope/lib/python/OFS/Application.py", line 530, in
import_products
    product=__import__(pname, global_dict, global_dict, silly)
  File "/home/zopeadmin/zope/lib/python/Products/LoginManager/__init__.py",
line 1, in ?
    import LoginManager, LoginMethods, UserSources
  File
"/home/zopeadmin/zope/lib/python/Products/LoginManager/LoginManager.py",
line 9, in ?
    from Products.ZPatterns.SheetProviders import SheetProviderContainer
ImportError: cannot import name SheetProviderContainer

I am somewhat of a Python/Zope newbie and am at a real loss here. I have
Zpatterns 0.4.3b2 installed correctly and from what I have read
SheetProviderContainer should be part of that...
Any help would be greatly appreciated,

Thanks in advance,

Ryan