Velocity error after upgrade

Since upgrading JIRA from 2.4.1, we keep on getting these error messages and warnings. Any help would be gratefully appreciated...

Thanks,

Martin

--------------------
Found a problematic char with unicode: 8217
2004-03-03 14:29:15,675 ERROR [velocity] ASTMethod.execute() : exception from introspection : java.lang.NullPointerException
2004-03-03 14:29:15,675 ERROR [velocity] ASTMethod.execute() : exception from introspection : java.lang.NullPointerException
Found a problematic char with unicode: 8220
[ERROR] ServletDispatcher - -Could not execute action <java.lang.NullPointerException>java.lang.NullPointerException
at com.atlassian.jira.web.action.workflow.WorkflowUIDispatcher.doExecute(WorkflowUIDispatcher.java:27)
at webwork.action.ActionSupport.execute(ActionSupport.java:154)
at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:46)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:131)
at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:181)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:129)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:61)
at com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:39)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:181)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.jira.web.filters.ActionCleanupDelayFilter.doFilter(ActionCleanupDelayFilter.java:26)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.jira.web.filters.AppConsistencyFilter.doFilter(AppConsistencyFilter.java:92)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.jira.web.filters.EncodingFilter.doFilter(EncodingFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2417)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:193)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:781)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:549)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:589)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:666)
at java.lang.Thread.run(Thread.java:534)

2004-03-03 15:10:15,674 WARN [velocity] Velocimacro : VM addition rejected : authorlink : inline not allowed to replace existing
VM
2004-03-03 15:10:15,674 WARN [velocity] Velocimacro : VM addition rejected : makelinkedhtml : inline not allowed to replace exis
ting VM
[WARN] SubsetIteratorFilter - -Source is null returning empty set.
2004-03-03 15:16:15,649 ERROR [velocity] ASTMethod.execute() : exception from introspection : java.lang.NullPointerException
2004-03-03 15:16:15,649 ERROR [velocity] ASTMethod.execute() : exception from introspection : java.lang.NullPointerException
2004-03-03 15:16:15,665 ERROR [velocity] ASTMethod.execute() : exception from introspection : java.lang.NullPointerException
2004-03-03 15:16:15,665 ERROR [velocity] ASTMethod.execute() : exception from introspection : java.lang.NullPointerException
2004-03-03 15:16:15,665 ERROR [velocity] ASTMethod.execute() : exception from introspection : java.lang.NullPointerException
2004-03-03 15:16:15,665 ERROR [velocity] ASTMethod.execute() : exception from introspection : java.lang.NullPointerException
2004-03-03 15:16:15,728 WARN [velocity] Velocimacro : VM addition rejected : authorlink : inline not allowed to replace existing
VM
2004-03-03 15:16:15,728 WARN [velocity] Velocimacro : VM addition rejected : makelinkedhtml : inline not allowed to replace exis
ting VM
2004-03-03 15:18:15,584 WARN [velocity] Velocimacro : VM addition rejected : authorlink : inline not allowed to replace existing
VM
2004-03-03 15:18:15,584 WARN [velocity] Velocimacro : VM addition rejected : makelinkedhtml : inline not allowed to replace exis
ting VM
2004-03-03 15:18:15,646 WARN [velocity] Velocimacro : VM addition rejected : authorlink : inline not allowed to replace existing
VM
2004-03-03 15:18:15,646 WARN [velocity] Velocimacro : VM addition rejected : makelinkedhtml : inline not allowed to replace exis
ting VM
2004-03-03 15:20:15,628 WARN [velocity] Velocimacro : VM addition rejected : authorlink : inline not allowed to replace existing
VM
2004-03-03 15:20:15,628 WARN [velocity] Velocimacro : VM addition rejected : makelinkedhtml : inline not allowed to replace exis
ting VM
2004-03-03 15:24:15,590 WARN [velocity] Velocimacro : VM addition rejected : authorlink : inline not allowed to replace existing
VM
2004-03-03 15:24:15,590 WARN [velocity] Velocimacro : VM addition rejected : makelinkedhtml : inline not allowed to replace exis
ting VM
2004-03-03 15:24:15,653 WARN [velocity] Velocimacro : VM addition rejected : authorlink : inline not allowed to replace existing
VM
2004-03-03 15:24:15,653 WARN [velocity] Velocimacro : VM addition rejected : makelinkedhtml : inline not allowed to replace exis
ting VM