[Zope] [Newbie] Document unviewable

[Eric Simoëns]

Hello,

I still can't figure out why my DTML document gives me the following
Zope error :

    Zope Error

    Zope has encountered an error while publishing this resource. 

    Error Type: AttributeError
    Error Value: __call__


when I ask Zope to view it as the document is in a sub-folder, but
viewable without problem when the document is in the root folder.


Any rational explanation ?
A link to the revelant paragraph in the documentation ?


Thanks in advance,
Greeting,
Eric

(Zope 1.2.4 on Linux RH 6.1, loged in as superuser.)