It looks like link for the task progress bar is:

http://jenkins:8080/job/MyProject/1252/batchTasks/1console

when it should be:

http://jenkins:8080/job/MyProject/1252/batchTasks/1

This causes the following stack trace (which leads people to think there is something wrong with the server):

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: java.lang.NumberFormatException: For input string: "1console"
org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:597)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
org.kohsuke.stapler.MetaClass$13.dispatch(MetaClass.java:382)
org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
org.kohsuke.stapler.MetaClass$13.dispatch(MetaClass.java:382)
org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
org.kohsuke.stapler.MetaClass$7.doDispatch(MetaClass.java:242)
org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:478)
org.kohsuke.stapler.Stapler.service(Stapler.java:160)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94)
hudson.plugins.audit_trail.AuditTrailFilter.doFilter(AuditTrailFilter.java:64)
hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:97)
hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86)
hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
root cause

java.lang.NumberFormatException: For input string: "1console"
java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
java.lang.Integer.parseInt(Integer.java:458)
java.lang.Integer.parseInt(Integer.java:499)
hudson.plugins.batch_task.BatchRunAction.getDynamic(BatchRunAction.java:95)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:282)
org.kohsuke.stapler.Function.bindAndInvoke(Function.java:149)
org.kohsuke.stapler.MetaClass$13.dispatch(MetaClass.java:380)
org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
org.kohsuke.stapler.MetaClass$13.dispatch(MetaClass.java:382)
org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
org.kohsuke.stapler.MetaClass$13.dispatch(MetaClass.java:382)
org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
org.kohsuke.stapler.MetaClass$7.doDispatch(MetaClass.java:242)
org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
org.kohsuke.stapler.Stapler.invoke(Stapler.java:478)
org.kohsuke.stapler.Stapler.service(Stapler.java:160)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94)
hudson.plugins.audit_trail.AuditTrailFilter.doFilter(AuditTrailFilter.java:64)
hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:97)
hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86)
hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.29 logs.

Apache Tomcat/6.0.29