org.jboss.cache.TreeCache missing on EAP 5.0

Issue

• We are upgrading from JBoss 4.x to JBoss EAP 5.x. We are receiving a ClassNotFoundException with respect to class org.jboss.cache.TreeCache. Where is this class located?

• We are receiving the following exception (it looks as if there is an instantiation issue with JBossCache).

2012-08-24 08:02:58,880 ERROR [com.teamcenter.presentation.webclient.actions] (http-0.0.0.0-8080-1) 147.105.160.77.62354.Anonymous.00001 - 2012/08/24-14:02:58,879 UTC - plm-dev-rna-01 - Error during login. com.teamcenter.presentation.webclient.actions 
javax.resource.ResourceException: Unable to get managed connection for jca/JETI/Adapter
    at org.jboss.resource.connectionmanager.BaseConnectionManager2.getManagedConnection(BaseConnectionManager2.java:441)
    at org.jboss.resource.connectionmanager.BaseConnectionManager2.getManagedConnection(BaseConnectionManager2.java:381)
    at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:496)
    at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:941)
    at com.teamcenter.jeti.resourceadapter.spi.impl.ConnectionFactoryImpl.getConnection(Unknown Source)
    at com.teamcenter.jeti.ejb.GatewayBean.authenticate(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
...
Caused by: org.jboss.resource.JBossResourceException: Unexpected throwable while trying to create a connection: null; - nested throwable: (java.lang.reflect.UndeclaredThrowableException)
    at org.jboss.resource.JBossResourceException.rethrowAsResourceException(JBossResourceException.java:61)
    at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.getConnection(InternalManagedConnectionPool.java:304)
    at org.jboss.resource.connectionmanager.JBossManagedConnectionPool$BasePool.getConnection(JBossManagedConnectionPool.java:690)
    at org.jboss.resource.connectionmanager.BaseConnectionManager2.getManagedConnection(BaseConnectionManager2.java:404)
    ... 78 more
Caused by: java.lang.reflect.UndeclaredThrowableException
    at org.jboss.resource.JBossResourceException.process(JBossResourceException.java:206)
    at org.jboss.resource.JBossResourceException.<init>(JBossResourceException.java:113)
    ... 82 more
Caused by: java.lang.InstantiationError: org.jboss.cache.Node
    at org.jboss.cache.factories.NodeFactory.createDataNode(NodeFactory.java:99)
    at org.jboss.cache.factories.NodeFactory.createDataNode(NodeFactory.java:67)
    at org.jboss.cache.factories.NodeFactory.createRootDataNode(NodeFactory.java:51)
...