I have more data - I hacked Facelets 1.1.2 to spit out some ClassLoader info. What I found is that in one case, when calling Renderer.render(myTemplate), the Classloader is the EAR's classloader. In the other case, the classloader is the war's classloader. not working - ear's classloader | 11:42:20,157 INFO com.evergreen.accesscontrol.impl.MailSenderBean - | Classloader funtime:Me: com.evergreen.accesscontrol.impl.MailSenderBean@62f2d1 | My Classloader: org.jboss.mx.loading.UnifiedClassLoader3@1d52240{ url=file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear ,addedOrder=49} | My Classloader's parent: org.jboss.mx.loading.HeirarchicalLoaderRepository3$NoParentClassLoader@f579de | My Classloader's parent's parent: org.jboss.system.server.NoAnnotationURLClassLoader@ab95e6 | | 11:42:20,157 INFO com.sun.facelets.compiler.Compiler - Initializing | 11:42:20,157 INFO com.sun.facelets.compiler.TagLibraryConfig - I am using a classloader obtained from 'Thread.currentThread().getContextClassLoader()'. | 11:42:20,157 INFO com.sun.facelets.compiler.TagLibraryConfig - Classloader -> org.jboss.mx.loading.UnifiedClassLoader3@1d52240{ url=file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859acc | ess-control-1.0.ear ,addedOrder=49} | 11:42:20,157 INFO com.sun.facelets.compiler.TagLibraryConfig - Classloader.parent -> org.jboss.mx.loading.HeirarchicalLoaderRepository3$NoParentClassLoader@f579de | 11:42:21,017 INFO com.sun.facelets.compiler.Compiler - UILibrary.Namespace ->http://java.sun.com/jsf/facelets | 11:42:21,017 WARN com.sun.facelets.compiler.Compiler - Missing Built-in Tag Libraries! Make sure they are included within the META-INF directory of Facelets' Jar | 11:42:21,017 INFO com.sun.facelets.compiler.Compiler - Initialization Successful | | working - war's classloader | 11:45:35,928 INFO com.evergreen.accesscontrol.impl.MailSenderBean - sending email: mail/access-request-complete-user.xhtml | 11:45:35,928 INFO com.evergreen.accesscontrol.impl.MailSenderBean - | Classloader funtime:Me: com.evergreen.accesscontrol.impl.MailSenderBean@e530d5 | My Classloader: org.jboss.mx.loading.UnifiedClassLoader3@1d52240{ url=file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear ,addedOrder=49} | My Classloader's parent: org.jboss.mx.loading.HeirarchicalLoaderRepository3$NoParentClassLoader@f579de | My Classloader's parent's parent: org.jboss.system.server.NoAnnotationURLClassLoader@ab95e6 | | 11:45:35,928 INFO com.sun.facelets.compiler.Compiler - Initializing | 11:45:35,928 INFO com.sun.facelets.compiler.TagLibraryConfig - I am using a classloader obtained from 'Thread.currentThread().getContextClassLoader()'. | 11:45:35,928 INFO com.sun.facelets.compiler.TagLibraryConfig - Classloader -> WebappClassLoader | delegate: false | repositories: | /WEB-INF/classes/ | ----------> Parent Classloader: | java.net.FactoryURLClassLoader@146eb1b | | 11:45:35,928 INFO com.sun.facelets.compiler.TagLibraryConfig - Classloader.parent -> java.net.FactoryURLClassLoader@146eb1b | 11:45:36,819 INFO com.sun.facelets.compiler.TagLibraryConfig - Added Library from: jar:file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear-contents/access-control-w | ebapp-1.0-exp.war/WEB-INF/lib/jsf-facelets-1.1.12E.jar!/META-INF/jsf-ui.taglib.xml | 11:45:36,819 INFO com.sun.facelets.compiler.TagLibraryConfig - Added Library from: jar:file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear-contents/access-control-w | ebapp-1.0-exp.war/WEB-INF/lib/jsf-facelets-1.1.12E.jar!/META-INF/jstl-fn.taglib.xml | 11:45:36,834 INFO com.sun.facelets.compiler.TagLibraryConfig - Added Library from: jar:file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear-contents/access-control-w | ebapp-1.0-exp.war/WEB-INF/lib/jsf-facelets-1.1.12E.jar!/META-INF/jstl-core.taglib.xml | 11:45:36,834 INFO com.sun.facelets.compiler.TagLibraryConfig - Added Library from: jar:file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear-contents/access-control-w | ebapp-1.0-exp.war/WEB-INF/lib/jsf-facelets-1.1.12E.jar!/META-INF/jsf-html.taglib.xml | 11:45:36,850 INFO com.sun.facelets.compiler.TagLibraryConfig - Added Library from: jar:file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear-contents/access-control-w | ebapp-1.0-exp.war/WEB-INF/lib/jboss-seam-ui-1.1.6.jar!/META-INF/seam-ui.taglib.xml | 11:45:36,850 INFO com.sun.facelets.compiler.TagLibraryConfig - Added Library from: jar:file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear-contents/access-control-w | ebapp-1.0-exp.war/WEB-INF/lib/jboss-seam-mail-1.1.6.jar!/META-INF/seam-mail.taglib.xml | 11:45:36,866 INFO com.sun.facelets.compiler.TagLibraryConfig - Added Library from: jar:file:/C:/jboss-4.0.4.EJB.3RC8/server/default/tmp/deploy/tmp44859access-control-1.0.ear-contents/access-control-w | ebapp-1.0-exp.war/WEB-INF/lib/jsf-facelets-1.1.12E.jar!/META-INF/jsf-core.taglib.xml | 11:45:36,866 INFO com.sun.facelets.compiler.Compiler - Initialization Successful | So how is it that in one case, the ear classloader is used, in another, nearly iidentical case, the webapp's classloader is used? Thanks, Brad Smith View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4021202#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...