[TYPO3-Solr] Solr AJAX Search Plugin - failure loading page

[Dirk Wenzel]

Hi,
when I put a Solr AJAX Search Plugin into a page this page fails to load with 
the following error: 

> Tried to set argument "id", but setting arguments is forbidden.

The non-AJAX widget works fine.
What happens there? 

Kind regards 
Dirk