Saving a job configuration to add new managed script
1. Define script arguments is unchecked but the arguments text box is still shown
2. When saving with empty argument or setting a dummy value the following error is seen:

Failed to parse form data. Please report this problem as a bug
JSON={"":"<b>Workflow -<\/b>\n<br />","builder":[{"buildStepArgs":[

{"arg":""}

,

{"arg":"foo"}

],"buildStepId":"ScriptBuildStepConfigProvider.1330354154388","defineArgs":true,"kind":"org.jenkinsci.plugins.managedscripts.ScriptBuildStep","stapler-class":"org.jenkinsci.plugins.managedscripts.ScriptBuildStep"},

{"command":"source stage-env.sh\nmake all check","kind":"hudson.tasks.Shell","stapler-class":"hudson.tasks.Shell"}

],"core:apply":"","description":"<b>Workflow <\/b>\n<br />\n developers pushes a commit to gerrit<br />\n- a build is triggered on Jenkins<br />\n- if the build is successful, then the gerrit user configured in Jenkins marks the commit as verified<br />\n- code reviewer reviews the change list<br />\n- if code reviewer provides +2 for the review and Jenkins provides +1 for verify, commit is merged with the branch<br />\n<br />","displayNameOrNull":"","hasSlaveAffinity":

{"assignedLabelString":"ubuntu"}

,"hudson-plugins-timestamper-TimestamperBuildWrapper":{},"hudson-triggers-SCMTrigger":

{"scmpoll_spec":"*/10 * * * *"}

,"logrotate":

{"logrotate_artifact_days":"","logrotate_artifact_nums":"","logrotate_days":"","logrotate_nums":""}

,"name":"libbbSensors_Main_linux","org-jenkinsci-plugins-configfiles-buildwrapper-ConfigFileBuildWrapper":{"managedFiles":{"fileId":"DefaultGlobalMavenSettingsProvider.1323370547609","targetLocation":"package/dev-settings.xml","variable":""}},"properties":{"com-coravy-hudson-plugins-github-GithubProjectProperty":

{"projectUrl":""}

,"hudson-model-ParametersDefinitionProperty":{},"hudson-plugins-heavy_job-HeavyJobProperty":

{"weight":"1"}

,"hudson-plugins-promoted_builds-JobPropertyImpl":{},"hudson-plugins-sidebar_link-ProjectLinks":{},"hudson-plugins-throttleconcurrents-ThrottleJobProperty":

{"categories":false,"maxConcurrentPerNode":"0","maxConcurrentTotal":"0","throttleEnabled":false,"throttleOption":"category"}

,"hudson-queueSorter-PrioritySorterJobProperty":

{"priority":"100"}

,"stapler-class-bag":"true"},"scm":{"":["hudson.plugins.git.util.DefaultBuildChooser","6"],"authorOrCommitter":false,"branches":[

{"name":"origin/master"}

,

{"name":"origin/develop"}

],"browser":

{"stapler-class":"hudson.plugins.git.browser.GitWeb","url":"http://gerrit.rim.net/gitweb?p=bb/libs/libbbSensors.git"}

,"buildChooser":

{"stapler-class":"hudson.plugins.git.util.DefaultBuildChooser"}

,"clean":true,"disableSubmodules":false,"excludedRegions":"","excludedUsers":"","gitConfigEmail":"BBSIBuilds@rim.com","gitConfigName":"bbsibuilds","gitTool":"Default","includedRegions":"","localBranch":"","pruneBranches":false,"recursiveSubmodules":false,"reference":"","relativeTargetDir":"","remotePoll":false,"scmName":"","skipTag":true,"userRemoteConfigs":

{"name":"","refspec":"+refs/heads/master:refs/remotes/origin/master","url":"http://git.rim.net/bb/libs/libbbSensors.git"}

,"value":"1","wipeOutWorkspace":true}}

net.sf.json.JSONException: JSONObject["defineArgs"] is not a JSONObject.
at net.sf.json.JSONObject.getJSONObject(JSONObject.java:1759)
at org.jenkinsci.plugins.managedscripts.ScriptBuildStep$DescriptorImpl.newInstance(ScriptBuildStep.java:300)
at org.jenkinsci.plugins.managedscripts.ScriptBuildStep$DescriptorImpl.newInstance(ScriptBuildStep.java:185)
at hudson.model.Descriptor.newInstancesFromHeteroList(Descriptor.java:909)
at hudson.model.Descriptor.newInstancesFromHeteroList(Descriptor.java:896)
at hudson.util.DescribableList.rebuildHetero(DescribableList.java:184)
at hudson.model.Project.submit(Project.java:197)
at hudson.model.Job.doConfigSubmit(Job.java:989)
at hudson.model.AbstractProject.doConfigSubmit(AbstractProject.java:659)
at sun.reflect.GeneratedMethodAccessor1896.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:288)
at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:151)
at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:90)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:563)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:648)
at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:241)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:563)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:648)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:477)
at org.kohsuke.stapler.Stapler.service(Stapler.java:159)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)
at winstone.ServletConfiguration.execute(ServletConfiguration.java:248)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:376)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:95)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:185)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:159)
at net.bull.javamelody.PluginMonitoringFilter.doFilter(PluginMonitoringFilter.java:86)
at org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:84)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:98)
at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:74)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:98)
at hudson.plugins.audit_trail.AuditTrailFilter.doFilter(AuditTrailFilter.java:66)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:98)
at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:61)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:331)
at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:245)
at winstone.RequestHandlerThread.run(RequestHandlerThread.java:148)
at java.lang.Thread.run(Thread.java:662)