[Zope] Error in ZMI: Failed to import class TemplateDict from module AccessControl.Dtml

[Gabriela López Ruiz]

Hi All,
This morning I tried to go to the Root Folder on mi ZMI and I found the 
error showed below. I don't know what's the TemplateDict class but the fact 
is that I can't export any of my sites.
Any suggestion will be thanked.
Gabriela

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Zope has encountered an error while publishing this resource.

Error Type: SystemError
Error Value: Failed to import class TemplateDict from module 
AccessControl.DTML
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