Hello,
We are running DSpace 1.5.1. When I try to submit an item, at the last step 
(complete submission), I got the following error message. I also checked 
dspace.log. It gave the error message "org.dspace.core.I18nUtil @No language 
specified for EPerson 3". Can anyone tell me what it means? Thank you very much!
java.lang.ClassCastException: gnu.mail.handler.TextPlain
Error calling continuation
context:/resource://aspects/Submission/submission.js - 527:-1

context:/resource://aspects/Submission/submission.js - 463:-1

context:/resource://aspects/Submission/submission.js - 323:-1

context:/resource://aspects/Submission/submission.js - 0:-1

context:/resource://aspects/Submission/sitemap.xmap - 128:44

<map:call>

context:/file:/dspace/webapps/xmlui/aspects/aspects.xmap - 119:72

<map:mount>

context:/file:/dspace/webapps/xmlui/sitemap.xmap - 296:80

<map:mount>

context:/file:/dspace/webapps/xmlui/aspects/aspects.xmap - 115:34

<map:serialize type="xml">

context:/file:/dspace/webapps/xmlui/aspects/aspects.xmap - 114:43

<map:transform type="PageNotFound">

context:/file:/dspace/webapps/xmlui/aspects/aspects.xmap - 113:22

<map:generate>

context:/file:/dspace/webapps/xmlui/themes/UTA/sitemap.xmap - 96:34

<map:serialize type="xhtml">

context:/file:/dspace/webapps/xmlui/themes/UTA/sitemap.xmap - 94:37

<map:transform>

context:/file:/dspace/webapps/xmlui/themes/UTA/sitemap.xmap - 88:33

<map:transform type="i18n">

context:/file:/dspace/webapps/xmlui/themes/UTA/sitemap.xmap - 84:35

<map:transform>

context:/file:/dspace/webapps/xmlui/themes/UTA/sitemap.xmap - 72:43

<map:transform type="IncludePageMeta">

context:/file:/dspace/webapps/xmlui/themes/UTA/sitemap.xmap - 70:55

<map:generate type="file">

context:/file:/dspace/webapps/xmlui/themes/themes.xmap - 63:45

<map:mount>

context:/file:/dspace/webapps/xmlui/sitemap.xmap - 345:73

<map:mount>

java.lang.ClassCastException: gnu.mail.handler.TextPlain
        at 
javax.activation.MailcapCommandMap.getDataContentHandler(MailcapCommandMap.java:596)
        at 
javax.activation.MailcapCommandMap.createDataContentHandler(MailcapCommandMap.java:550)
        at 
javax.activation.DataHandler.getDataContentHandler(DataHandler.java:611)
        at javax.activation.DataHandler.writeTo(DataHandler.java:315)
        at javax.mail.internet.MimeUtility.getEncoding(MimeUtility.java:248)
        at 
javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1268)
        at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2012)
        at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:1980)
        at javax.mail.Transport.send(Transport.java:97)
        at org.dspace.core.Email.send(Email.java:362)
        at 
org.dspace.workflow.WorkflowManager.notifyOfArchive(WorkflowManager.java:709)
        at org.dspace.workflow.WorkflowManager.doState(WorkflowManager.java:619)
        at org.dspace.workflow.WorkflowManager.doState(WorkflowManager.java:592)
        at org.dspace.workflow.WorkflowManager.doState(WorkflowManager.java:556)
        at org.dspace.workflow.WorkflowManager.doState(WorkflowManager.java:516)
        at org.dspace.workflow.WorkflowManager.start(WorkflowManager.java:201)
        at 
org.dspace.submit.step.CompleteStep.doProcessing(CompleteStep.java:115)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at 
org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:230)
        at org.mozilla.javascript.ScriptRuntime.call(ScriptRuntime.java:1244)
        at 
org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:1134)
        at 
org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:190)
        at 
org.mozilla.javascript.continuations.ContinuationInterpreter.interpret(ContinuationInterpreter.java:138)
        at 
org.mozilla.javascript.continuations.InterpretedFunctionImpl.call(InterpretedFunctionImpl.java:121)
        at org.mozilla.javascript.ScriptRuntime.call(ScriptRuntime.java:1244)
        at 
org.mozilla.javascript.ScriptableObject.callMethod(ScriptableObject.java:1591)
        at 
org.apache.cocoon.components.flow.javascript.fom.FOM_JavaScriptInterpreter.handleContinuation(FOM_JavaScriptInterpreter.java:852)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.CallFunctionNode.invoke(CallFunctionNode.java:123)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:116)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142)
        at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
        at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
        at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.buildPipeline(ConcreteTreeProcessor.java:192)
        at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.buildPipeline(TreeProcessor.java:265)
...


Thanks,
Fen Lu
System Library
University of Texas at Arlington
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