To add some more information, SimpleExample.java and MixedExample.java are working well, but I still have the above error after doing the following things :1) copy wikiModel.xml to /alfresco/extension2) rename /alfresco/extension/custom-model-context.xml.sample to custom-model-context.xml and edit this file, here's the code :<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE beans PUBLIC '-//SPRING//DTD BEAN//EN' 'http://www.springframework.org/dtd/spring-beans.dtd'>
<beans>
<!– Registration of new models –>
<bean id="extension.dictionaryBootstrap" parent="dictionaryModelBootstrap" depends-on="dictionaryBootstrap">
<property name="models">
<list>
<value>alfresco/extension/customModel.xml</value>
<!–wiki jcr–>
<value>alfresco/extension/wikiModel.xml</value>
</list>
</property>
</bean>
</beans>
3) add the following lines to /alfresco/extension/web-client-config-custom.xml : <config evaluator="node-type" condition="wiki:page">
<property-sheet>
<show-property name="wiki:restrict"/>
<show-property name="wiki:category"/>
</property-sheet>
</config>
<config evaluator="string-compare" condition="Custom Content Types">
<content-types>
<type name="wiki:page"/>
</content-types>
</config>
<config evaluator="string-compare" condition="Advanced Search">
<advanced-search>
<content-types>
<type name="wiki:page" />
</content-types>
<custom-properties>
<meta-data type="wiki:page" property="wiki:restrict" />
<meta-data type="wiki:page" property="wiki:category" />
</custom-properties>
</advanced-search>
</config>
4) execute WIKIExample.java
