bullet problem in iText

[DDiText]

Hello,

I would like to convert a HTML page to rtf format. But I have an exception : "com.lowagie.text.List incompatible with com.lowagie.text.Paragraph", that seem occured when I add a bullet in my HTML page (<ul or <ol>), I'm sure in 100% these tags are not in paragraph tag.
Do you know how can I fixe it ?

Thanks for your future answers.