A slight word of warning. . .
Writer2xhtml at this point, doesn't claim compatibility with LibreOffice V4. If you want to use it without any surprises, you might be advised to use one of the older versions of OO or LO it claims compatibility with.
While both OO and LO make it easy to download the latest version, the older versions remain available for situations like this. Yet another reason to love the Open Source concept!