Eclipse安装activiti插件需要的jar包

今天在eclipse中安装activiti插件过程中遇到无法安装的问题,提示的错误信息:Cannot complete the install because one or more required items could not be found. Software being installed: Activiti Eclipse BPMN 2.0 Designer 5.12.0 (org.activiti.designer.feature.feature.group 5.8.0) Missing requirement: Activiti Eclipse BPMN 2.0