I have trouble using htmlb in nwds 7.5

I get on all tags unknown tag ....

code looks like this

<jsp:useBean id="userBean" scope="request" />

<%@ taglib uri="tagLib" prefix="hbj" %>

<hbj:content id="systemdetails" >

<hbj:page title="Show System Details">

<hbj:form id="userdetailsform" method="post" target="self" encodingType="multipart/form-data" action="test.ShowSystemController">

<hbj:group design="PRIMARYCOLOR">

<hbj:gridLayout id="titlearea" debugMode="True" width="100%" cellSpacing="5" cellPadding="3"> .....

on all hbj tags I get unknown tag