greenhopper version 5.7.4 can not run properly on jira version 4.4.1

when i install greenhopper version 5.7.4 on jira version 4.4.1 ,issues clone and move action does not work good.what should id do ?
log:

2011-10-11 17:41:34,239 http-8080-2 ERROR ke.zhang 1061x59x1 q6bnis 10.14.19.18 /secure/DeleteIssue.jspa [jira.bc.issue.DefaultIssueService] There was an exception while trying to delete the issue 'YFGLPT-40'.
com.atlassian.jira.exception.RemoveException: com.atlassian.greenhopper.service.rank.RankException: Multiple heads found in rank chain: issueIDs [[31190 r0 no prev no next], [27190 r0 no prev n27191]] have no parent link. Please update the rank table and ensure that there is exactly one issue that has no child and exactly one that has no parent.
at com.atlassian.jira.issue.managers.DefaultIssueDeleteHelper.deleteIssue(DefaultIssueDeleteHelper.java:129)
at com.atlassian.jira.issue.managers.DefaultIssueManager.deleteIssue(DefaultIssueManager.java:646)
at com.atlassian.jira.bc.issue.DefaultIssueService.delete(DefaultIssueService.java:389)
at com.atlassian.jira.bc.issue.DefaultIssueService.delete(DefaultIssueService.java:354)
at com.atlassian.jira.bc.issue.DefaultIssueService.delete(DefaultIssueService.java:360)
at com.atlassian.jira.web.action.issue.DeleteIssue.doExecute(DeleteIssue.java:28)
at webwork.action.ActionSupport.execute(ActionSupport.java:165)
at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:76)
at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:39)
at webwork.interceptor.NestedInterceptorChain.proceed(NestedInterceptorChain.java:31)
at webwork.interceptor.ChainedInterceptor.intercept(ChainedInterceptor.java:16)
at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:35)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:205)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:143)
at com.atlassian.jira.web.dispatcher.JiraWebworkActionDispatcher.service(JiraWebworkActionDispatcher.java:152)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.atlassian.jira.web.filters.steps.ChainedFilterStepRunner.doFilter(ChainedFilterStepRunner.java:74)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:44)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
at com.atlassian.applinks.core.rest.context.ContextFilter.doFilter(ContextFilter.java:25)
at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)