After submitting login form in scripting-mailreader application, following exception appears in the server log:

WARNING: Exception from exceptionCommand 'servlet-exception'
org.apache.bsf.BSFException: exception from Groovy: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, home_user01_jharting_jboss_ews_1.tomcat6_webapps_struts_scripting_mailreader_1..__WEB_INF_scripts_Logon.gv: 21: unable to resolve class org.apache.struts.action.ActionError
@ line 21, column 1.
1 error

at org.codehaus.groovy.bsf.GroovyEngine.exec(GroovyEngine.java:140)
at org.apache.bsf.BSFManager$6.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.bsf.BSFManager.exec(Unknown Source)
at org.apache.struts.scripting.ScriptAction.execute(ScriptAction.java:245)
at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:166)
at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:175)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:166)
at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:857)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:565)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1509)
at java.lang.Thread.run(Thread.java:619)