[Zope-CMF] Security Problems

[Mirna]

I didn't change the permissions, (two months ago at least)
My problem is that I can=B4t to access to roster (neither the manager)
Could it be problem of a corrupt script? Because I don't see the answer i=
n
the traceback:

   Site Error
An error was encountered while publishing this resource.

TALESError

Sorry, a site error occurred.

Traceback (innermost last):
  File /home/myrna/Zope-2.4.3-src/lib/python/ZPublisher/Publish.py, line
223, in publish_module
  File /home/myrna/Zope-2.4.3-src/lib/python/ZPublisher/Publish.py, line
187, in publish
  File /home/myrna/Zope-2.4.3-src/lib/python/Zope/__init__.py, line 226, =
in
zpublisher_exception_hook
    (Object: Members)
  File /home/myrna/Zope-2.4.3-src/lib/python/ZPublisher/Publish.py, line
171, in publish
  File /home/myrna/Zope-2.4.3-src/lib/python/ZPublisher/mapply.py, line 1=
60,
in mapply
    (Object: roster)
  File /home/myrna/Zope-2.4.3-src/lib/python/ZPublisher/Publish.py, line
112, in call_object
    (Object: roster)
  File /home/myrna/Zope-2.4.3-src/lib/python/Shared/DC/Scripts/Bindings.p=
y,
line 324, in __call__
    (Object: roster)
  File /home/myrna/Zope-2.4.3-src/lib/python/Shared/DC/Scripts/Bindings.p=
y,
line 354, in _bindAndExec
    (Object: roster)
  File
/home/myrna/Zope-2.4.3-src/lib/python/Products/PageTemplates/ZopePageTemp=
lat
e.py, line 267, in _exec
    (Object: roster)
  File
/home/myrna/Zope-2.4.3-src/lib/python/Products/PageTemplates/PageTemplate=
.py
, line 156, in pt_render
    (Object: roster)
  File /home/myrna/Zope/lib/python/TAL/TALInterpreter.py, line 229, in
__call__
  File /home/myrna/Zope/lib/python/TAL/TALInterpreter.py, line 262, in
interpret
  File /home/myrna/Zope/lib/python/TAL/TALInterpreter.py, line 594, in
do_useMacro
  File /home/myrna/Zope/lib/python/TAL/TALInterpreter.py, line 262, in
interpret
  File /home/myrna/Zope/lib/python/TAL/TALInterpreter.py, line 613, in
do_defineSlot
  File /home/myrna/Zope/lib/python/TAL/TALInterpreter.py, line 262, in
interpret
  File /home/myrna/Zope/lib/python/TAL/TALInterpreter.py, line 473, in
do_setLocal_tal
  File
/home/myrna/Zope-2.4.3-src/lib/python/Products/PageTemplates/TALES.py, li=
ne
295, in evaluate
  File
/home/myrna/Zope-2.4.3-src/lib/python/Products/PageTemplates/ZRPythonExpr=
.py
, line 121, in __call__
    (Info: container.portal_membership.getRoster())
  File Python expression "container.portal_membership.getRoster()", line =
2,
in f
    (Object: guarded_getattr)
  File
/home/myrna/Zope-2.4.3-src/lib/python/Products/CMFDefault/MembershipTool.=
py,
line 73, in getRoster
    (Object: portal_membership)
TALESError: Sorry, an error occurred