Problen with Zk Vizual Editor: Fail to render : Resource not found: http://www.zkoss.org/zkspring/..

<?page title="Usuários" contentType="text/html;charset=UTF-8"?>
<?taglib uri="http://www.zkoss.org/zkspring/security" prefix="sec"?>
<?variable-resolver class="org.zkoss.zkplus.spring.DelegatingVariableResolver"?>
<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit" arg0="gridUsuarios"?>
<zk>
<window id="gridUsuarios" title="Cadastro de Usuários" border="normal" width="800px" height="600px"
	closable="true" position="center, center" apply="${UsuariosCtrl}" xmlns:n="http://www.zkoss.org/2005/zk/native">
	<listbox id="listUsuarios" height="520px" model="@{UsuariosCtrl.listModel}" itemRenderer="@{UsuariosCtrl.itemRenderer}">
		<listhead>
			<listheader label="Código" width="75px"></listheader>
			<listheader label="Nome"></listheader>	
			<listheader label="Perfil de Acesso" width="250px"></listheader>
			<listheader label="Ativo" width="100px"></listheader>
		</listhead>
	</listbox>
	<toolbar align="end" style="padding:4px;">
		<button id="btnNew" label="Novo" width="70px" height="24px" disabled="${sec:isNoneGranted('AUTH_ALL, AUTH_USER_INSERT')}"></button>
		<button id="btnEdit" label="Editar" width="70px"  height="24px" disabled="${sec:isNoneGranted('AUTH_ALL, AUTH_USER_UPDATE')}"></button>
		<button id="btnDel" label="Apagar"  width="70px" height="24px" disabled="${sec:isNoneGranted('AUTH_ALL, AUTH_USER_DELETE')}"></button>
		<button id="btnClose" label="Fechar" width="70px" height="24px" onClick="gridUsuarios.detach()"></button>
	</toolbar>
</window>
</zk>

		<dependency>
			<groupId>org.zkoss.zk</groupId>
			<artifactId>zkspring-core</artifactId>
			<version>${zk_spring.version}</version>
			<exclusions>
				<exclusion>
					<artifactId>slf4j-api</artifactId>
					<groupId>org.slf4j</groupId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.zkoss.zk</groupId>
			<artifactId>zkspring-security</artifactId>
			<version>${zk_spring.version}</version>
		</dependency>