ConcurrentModificationException ------------------------------- Key: JBSEAM-3497 URL: https://jira.jboss.org/jira/browse/JBSEAM-3497 Project: Seam Issue Type: Bug Affects Versions: 2.1.0.CR1 Environment: Glassfish 9.1, Trinidad 1.2.9 Reporter: Cesar Acuna Priority: Blocker I have an application running with jboss-seam-2.0.1.GA, and everything works fine. I upgraded to seam 2.1.0.CR1 and now I am getting the following exception: (It seems it cannot retrieve one of my seam components "svcFilter", due to a concurrency problem) @Entity @Table(name = "service") @Name("svcFilter") @Scope(ScopeType.CONVERSATION) @AutoCreate [#|2008-10-02T16:47:36.175-0500|INFO|sun-appserver9.1|javax.enterprise.system.stream.out|_ThreadID=22;_ThreadName=httpSSLWorkerThread-80-4;|16:47:36,172 WARN SeamPhaseListener:199 - uncaught exception, passing to exception handler java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) at java.util.HashMap$EntryIterator.next(HashMap.java:834) at java.util.HashMap$EntryIterator.next(HashMap.java:832) . . . . . . Caused by: javax.el.PropertyNotFoundException: Target Unreachable, identifier 'svcFilter' resolved to null at com.sun.el.parser.AstValue.getTarget(AstValue.java:84) at com.sun.el.parser.AstValue.isReadOnly(AstValue.java:149) at com.sun.el.ValueExpressionImpl.isReadOnly(ValueExpressionImpl.java:248) at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.EditableValueRenderer.getReadOnly(EditableValueRenderer.java:244) at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormElementRenderer.renderAsElement(FormElementRenderer.java:217) at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.InputLabelAndMessageRenderer.getLabelFor(InputLabelAndMessageRenderer.java:78) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira