can't view the attached snapshot even if it seems to be added

I am having problem with www.CBC.ca website's pages. I can't view the created new item even if it seems be added properly. When I click "view snapshot" or "show file" for the attached item, it shows an error-like message:
The attached file could not be found.
It may have been moved or deleted outside of Zoteo".

I can't understand what is going on or what needs to be tweaked to the pages to that its snapshot could be attached AND viewed.

For example, you might like to try the following URL.
http://www.cbc.ca/consumer/story/2008/07/29/f-powergrab.html

Any help/idea?

--pmb can

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