I am trying to use Tag Feed w/ TwitterFeed. I want

I am trying to use Tag Feed w/ TwitterFeed.

I want to broadcast specific categories across my network through specific Twitter accounts. I have attempted to use the Tag Feed URL as the RSS feed in TwitterFeed. Is this incorrect?

TwitterFeed returns the following error message:

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A feed needs to contain publish dates or GUIDs in order to work with twitterfeed, see http://help.twitterfeed.com/knowledgebase/articles/88117-twitterfeed-says-we-couldn-t-find-valid-date-time

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When viewing the Tag Feed URL, it appears to have both of these parameters, so I'm not sure what to do.

Any thoughts?