新做了一张单据，分录中的f7字段名显示不出来，增加一个插件，提供一个ModelFieldSelectorEvent事件的后处理器。结果打开单据报错，无效的插件类型。这个是什么问题，还需要什么操作和配置。
错误信息：
错误信息：无效的插件类型【com.kingdee.bos.eventbus.model.ModelFieldSelectorEvent】
错误详细堆栈信息：com.kingdee.bos.eventbus.exception.PluginRegisterException: 无效的插件类型【com.kingdee.bos.eventbus.model.ModelFieldSelectorEvent】
at: com.kingdee.bos.eventbus.definition.Plugin.getEventClass(Plugin.java:93)
at: com.kingdee.bos.eventbus.support.EventHandlerRegister.registerHandler(EventHandlerRegister.java:80)
at: com.kingdee.bos.eventbus.support.EventHandlerRegister.registerHandlers(EventHandlerRegister.java:57)
at: com.kingdee.bos.webframework.dynamic.application.WebApplication.subscribeEvents(WebApplication.java:193)
at: com.kingdee.bos.webframework.dynamic.application.WebApplicationCache.createApplication(WebApplicationCache.java:210)
at: com.kingdee.bos.webframework.dynamic.application.WebApplicationCache.get(WebApplicationCache.java:76)
at: com.kingdee.bos.webframework.dynamic.application.DynamicWebController.findApplication(DynamicWebController.java:147)
at: com.kingdee.bos.webframework.dynamic.application.DynamicWebController.doEvent(DynamicWebController.java:53)
at: sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at: sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at: java.lang.reflect.Method.invoke(Method.java:597)
at: org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:240)
at: org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128)
at: org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
at: org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
at: org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
at: org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at: org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
at: org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
at: org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at: org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
at: javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at: javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at: com.apusic.web.container.ServletComponent.service(Unknown Source)
at: com.apusic.web.container.ServletFilterWrapper.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: com.kingdee.bos.invokecounter.HttpSqlFilter.doFilter(HttpSqlFilter.java:34)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: com.kingdee.bos.webframework.filter.WafHttpRequestFilter.doFilter(WafHttpRequestFilter.java:127)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: com.kingdee.bos.webframework.filter.WafUserMonitorFilter.doFilter(WafUserMonitorFilter.java:61)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: com.kingdee.bos.webframework.filter.WafContextFilter.doFilter(WafContextFilter.java:39)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: org.jasig.cas.client.util.HttpServletRequestWrapperFilter.doFilter(HttpServletRequestWrapperFilter.java:75)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:197)
at: org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at: org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:107)
at: com.kingdee.bos.sso.client.filter.authentication.KDPortalAuthenticationFilter.doFilter(KDPortalAuthenticationFilter.java:55)
at: org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at: org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: com.kingdee.bos.waf.filter.EaswebRPCFilter.doFilter(EaswebRPCFilter.java:56)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: com.kingdee.eas.perflog.app.monitor.http.HttpFilter.doFilter(HttpFilter.java:43)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.doFilter(Unknown Source)
at: org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at: org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at: com.apusic.web.container.FilterComponent.doFilter(Unknown Source)
at: com.apusic.web.container.FilterChainImpl.performFilter(Unknown Source)
at: com.apusic.web.container.WebContainer.invoke(Unknown Source)
at: com.apusic.web.container.WebContainer.processRequest(Unknown Source)
at: com.apusic.web.http.VirtualHost.processRequest(Unknown Source)
at: com.apusic.web.http.HttpServer.processRequest(Unknown Source)
at: com.apusic.web.http.HttpConnectionHandler.service(Unknown Source)
at: com.apusic.web.http.ConnectionHandler.processRequest(Unknown Source)
at: com.apusic.web.http.ConnectionHandler.processConnection(Unknown Source)
at: com.apusic.web.http.ConnectionHandler.run(Unknown Source)
at: com.apusic.util.ThreadPoolImpl$WorkerThread.run(Unknown Source)