Generate report from selected item produces XML Parsing Error

Hi,
when I try to generate a report from selected items, I get the error message "XML Parsing Error", etc. The reported error is 42299143. I work with Vista, Firefox 3.04, Zotero 1.5-sync3.3
I do not know if this is a problem with my programs or a bug (for the rest, Zotero is working OK. I did not have any problem with 1.0.7 either).
Could anybody help me with this, please? Many thanks.
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