NAV 2009 RTC: Style Sheet Tool / MailMerge / Word Header & Footer not shown


I have a problem, with the Dynamics NAV Stylesheet Tool. I am using the latest version (2.0) from the Style Sheet Tool.
I created a Word template with Header & Footer several weeks ago. The document was always created correctly with the header & footer.

Meanwhile, the header and footer are not shown in the word document any longer. I did several tests with a complete new and empty Style Sheet Word Document (only added a Header and Footer), but no Header and footer is shown in the document.

Has someone any idea, how to solve such a problem or what else I can try to test??

Best regards,