wicket portlet in Liferay 6.2

Hi,

I'm facing a problem with wicketstuff-portlet-6.16 in Liferay 6.2. I'm
using AjaxLink in a portlet and WicketAjax call failure with: Error while
parsing response: Invalid XML. I know there were some problems (starting
with wicket 1.5.9) but this problems were solved using a custom
IRequestCycleProvider. Can anybody help me with an answer if some
workaround is needed in wicketstuff-portlet 6.16?

Thank you