[Zope] setPermissionDefault not setting anything

[Sascha Welter]

Hi!

In a python product I'm trying to set default permissions. Same as in 
http://www.zope.org/Collectors/Zope/275 nothing is set at all, no error
is raised, no error message is logged.

This is on Zope 2.7.5. I'm basically using this code in my product:

view = "View"
edit = "Change Images and Files"
manage = "View management screens"

class CompanyService( CatalogPathAware, ObjectManager, PropertyManager,
SimpleItem ):
    [...snip...]
    security=ClassSecurityInfo()
    security.setPermissionDefault(view,('Authenticated','Manager',))
    security.setPermissionDefault(edit,['Manager'])
    security.setPermissionDefault(manage,['Manager'])
    def __init__( ...snip...

    security.declareProtected( view, 'index_html' )
    def index_html( REQUEST ):
        """
        test
        """
        return "ping"

Globals.InitializeClass( CompanyService )
[...snip...]

I searched for this on the web and found only old references to 2.5.X
and Collector Issue 275. So I tryed out the Test Class from that issue
and I get the same results. 

Am I doing something completely wrong? 

Is something wrong with my setup? I could upgrade to 2.7.6 too, but I 
don't see any changes in the code for SecurityInfo.py from the zope CVS
(unless of course I look in the wrong place:
http://cvs.zope.org/Zope2/lib/python/AccessControl/SecurityInfo.py.diff?r1=1.7.2.1&r2=1.9
)

I would be really happy to learn what I am doing wrong. Please don't
tell me that I discovered a bug, I don't want to.

Regards,

Sascha