I am having a problem where an item that exists in the content tree is not being retrieved by Sitecore fast query. The version of Sitecore is 6.5 (rev 121009). The odd thing is that this works in another environment. I have tried cleaning the databases by following the steps outlined here but still the query is failing. The item I am trying to retrieve is the email test02072013:

The fast query being used is:
fast:/sitecore/content/Home/Email Campaign/Test 02072013/Sent//*[@@templatename='HTML Message']
I have checked that the template is correct and the path to the item exists. I have tried running the query in the xpath builder but still no luck. Additionally a normal sitecore query doesn't work either:

Am I missing something obvious or does anyone have another approach I can try? Thanks