#4 — getIcon error

after the configuring of portal_facetednavigation, I try to use it. I get this error:

Time 2010/04/26 12:56:32.852 GMT+2
User Name (User Id) admin (admin)
Request URL http://xxx/istanze/due/@@faceted-navigation
Exception Type AttributeError
Exception Value %2B%2Bresource%2B%2Bcollage-resources/collage_icon.gif

Traceback (innermost last):

    * Module ZPublisher.Publish, line 119, in publish
    * Module ZPublisher.mapply, line 88, in mapply
    * Module ZPublisher.Publish, line 42, in call_object
    * Module Products.Five.browser.metaconfigure, line 417, in __call__
    * Module Shared.DC.Scripts.Bindings, line 313, in __call__
    * Module Shared.DC.Scripts.Bindings, line 350, in _bindAndExec
    * Module Products.PageTemplates.PageTemplateFile, line 129, in _exec
    * Module Products.PageTemplates.PageTemplate, line 98, in pt_render
    * Module zope.pagetemplate.pagetemplate, line 117, in pt_render
    * Module zope.tal.talinterpreter, line 271, in __call__
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 891, in do_useMacro
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 536, in do_optTag_tal
    * Module zope.tal.talinterpreter, line 521, in do_optTag
    * Module zope.tal.talinterpreter, line 516, in no_tag
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 957, in do_defineSlot
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 536, in do_optTag_tal
    * Module zope.tal.talinterpreter, line 521, in do_optTag
    * Module zope.tal.talinterpreter, line 516, in no_tag
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 861, in do_defineMacro
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 957, in do_defineSlot
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 536, in do_optTag_tal
    * Module zope.tal.talinterpreter, line 521, in do_optTag
    * Module zope.tal.talinterpreter, line 516, in no_tag
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 534, in do_optTag_tal
    * Module zope.tal.talinterpreter, line 516, in no_tag
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 949, in do_defineSlot
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 536, in do_optTag_tal
    * Module zope.tal.talinterpreter, line 521, in do_optTag
    * Module zope.tal.talinterpreter, line 516, in no_tag
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 891, in do_useMacro
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 536, in do_optTag_tal
    * Module zope.tal.talinterpreter, line 521, in do_optTag
    * Module zope.tal.talinterpreter, line 516, in no_tag
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 855, in do_condition
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 536, in do_optTag_tal
    * Module zope.tal.talinterpreter, line 521, in do_optTag
    * Module zope.tal.talinterpreter, line 516, in no_tag
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 824, in do_loop_tal
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 534, in do_optTag_tal
    * Module zope.tal.talinterpreter, line 516, in no_tag
    * Module zope.tal.talinterpreter, line 346, in interpret
    * Module zope.tal.talinterpreter, line 745, in do_insertStructure_tal
    * Module Products.PageTemplates.Expressions, line 223, in evaluateStructure
    * Module zope.tales.tales, line 696, in evaluate
      URL: index
      Line 78, Column 9
      Expression: <PythonExpr ( getattr(context, brain.getIcon))>
      Names:

      {'container': <PloneSite at /istanze/due>,
       'context': <PloneSite at /istanze/due>,
       'default': <object object at 0x2b28c25a0200>,
       'here': <PloneSite at /istanze/due>,
       'loop': {'brain': <Products.PageTemplates.Expressions.PathIterator object at 0xe94b0d0>},
       'nothing': None,
       'options': {'args': (<Products.Five.metaclass.SimpleViewClass from /home/yuri/sviluppo_plone/biblioteca_digitale/eggs/collective.facetednavigation-0.7.2-py2.4.egg/collective/facetednavigation/browser/templates/facetednavigation.pt object at 0xe890b50>,)},
       'repeat': <Products.PageTemplates.Expressions.SafeMapping object at 0xe66d248>,
       'request': <HTTPRequest, URL=http://xxx/istanze/due/@@faceted-navigation>,
       'root': <Application at >,
       'template': <ImplicitAcquirerWrapper object at 0xe7c8690>,
       'traverse_subpath': [],
       'user': <PropertiedUser 'admin'>,
       'view': <Products.Five.metaclass.SimpleViewClass from /home/yuri/sviluppo_plone/biblioteca_digitale/eggs/collective.facetednavigation-0.7.2-py2.4.egg/collective/facetednavigation/browser/templates/facetednavigation.pt object at 0xe890b50>,
       'views': <zope.app.pagetemplate.viewpagetemplatefile.ViewMapper object at 0xe7c8150>}

    * Module zope.tales.pythonexpr, line 59, in __call__
      __traceback_info__: ( getattr(context, brain.getIcon))
    * Module <string>, line 0, in ?

AttributeError: %2B%2Bresource%2B%2Bcollage-resources/collage_icon.gif

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I can display %2B%2Bresource%2B%2Bcollage-resources/collage_icon.gif so I cannot understand why I get this error...