Problemas ao carregar um bundle

java.util.MissingResourceException: Can't find bundle for base name br.com.ces.mensagem.Label, locale en_US
	java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:1521)
	java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1260)
	java.util.ResourceBundle.getBundle(ResourceBundle.java:962)
	com.sun.faces.taglib.jsf_core.LoadBundleTag.doStartTag(LoadBundleTag.java:164)
	com.icesoft.faces.webapp.parser.Parser.executeJspLifecycle(Parser.java:204)
	com.icesoft.faces.webapp.parser.Parser.executeJspLifecycle(Parser.java:229)
	com.icesoft.faces.webapp.parser.Parser.executeJspLifecycle(Parser.java:229)
	com.icesoft.faces.webapp.parser.Parser.executeJspLifecycle(Parser.java:229)
	com.icesoft.faces.webapp.parser.Parser.parse(Parser.java:162)

<?xml version='1.0' encoding='UTF-8'?>
<faces-config version="1.2"  xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd">

    <application>
	<locale-config>
		<default-locale>en</default-locale>
		<supported-locale>en</supported-locale>
		<supported-locale>en_US</supported-locale>
		<supported-locale>de</supported-locale>
	</locale-config>
	<message-bundle>
		br.com.ces.mensagem.Label
	</message-bundle>
</application>


    <managed-bean>
        <managed-bean-name>clienteSession</managed-bean-name>
        <managed-bean-class>br.com.ces.centrooeste.session.ClienteSession</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>
    <managed-bean>
        <managed-bean-name>categoriaSession</managed-bean-name>
        <managed-bean-class>br.com.ces.centrooeste.session.CategoriaSession</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>
</faces-config>