Missing JPOX "implementation creator"

[Jörg von Frantzius]

Hi, when I run the tests, I see the following error. Is there anything I can do about this myself per chance? Thanks for even more hints, Jörg 1) test(org.apache.jdo.tck.models.fieldtypes.TestArrayCollections)javax.jdo.JDOFatalException: The JPOX "implementation creator" was not found in the CLASSPATH. To use PersistenceManager.newInstance() you need to have the JPOX  Enhancer in the CLASSPATH.         at org.jpox.PMFContext.getImplementationCreator(PMFContext.java:90)         at org.jpox.store.rdbms.table.ColumnCreator.createColumnsForReferenceField(ColumnCreator.java:288)         at org.jpox.store.rdbms.table.ColumnCreator.createColumnsForField(ColumnCreator.java:411)         at org.jpox.store.rdbms.table.ColumnCreator.createColumnsForJoinTables(ColumnCreator.java:145)         at org.jpox.store.rdbms.table.ArrayTable.initialize(ArrayTable.java:93)         at org.jpox.store.rdbms.RDBMSManager$ClassAdder.addClassTablesAndValidate(RDBMSManager.java:2613)         at org.jpox.store.rdbms.RDBMSManager$ClassAdder.run(RDBMSManager.java:2225)         at org.jpox.store.rdbms.RDBMSManager$MgmtTransaction.execute(RDBMSManager.java:2081)         at org.jpox.store.rdbms.RDBMSManager.addClasses(RDBMSManager.java:576)         at org.jpox.store.rdbms.RDBMSManager.addClass(RDBMSManager.java:590)         at org.jpox.store.StoreManager.getDatastoreClass(StoreManager.java:983)         at org.jpox.state.StateManagerImpl.populateStrategyFields(StateManagerImpl.java:770)         at org.jpox.state.StateManagerImpl.<init>(StateManagerImpl.java:575)         at org.jpox.AbstractPersistenceManager.internalMakePersistent(AbstractPersistenceManager.java:1149)         at org.jpox.AbstractPersistenceManager.makePersistent(AbstractPersistenceManager.java:1205)         at org.apache.jdo.tck.models.fieldtypes.TestArrayCollections.runTest(TestArrayCollections.java:97)         at org.apache.jdo.tck.models.fieldtypes.TestArrayCollections.test(TestArrayCollections.java:73)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at org.apache.jdo.tck.JDO_Test.runBare(JDO_Test.java:237)         at org.apache.jdo.tck.util.BatchTestRunner.doRun(BatchTestRunner.java:107)         at org.apache.jdo.tck.util.BatchTestRunner.start(BatchTestRunner.java:147)         at org.apache.jdo.tck.util.BatchTestRunner.main(BatchTestRunner.java:122) NestedThrowablesStackTrace: java.lang.ClassNotFoundException: org.jpox.enhancer.ImplementationCreatorImpl         at java.net.URLClassLoader$1.run(URLClassLoader.java:200)         at java.security.AccessController.doPrivileged(Native Method)         at java.net.URLClassLoader.findClass(URLClassLoader.java:188)         at java.lang.ClassLoader.loadClass(ClassLoader.java:306)         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)         at java.lang.ClassLoader.loadClass(ClassLoader.java:251)         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)         at java.lang.Class.forName0(Native Method)         at java.lang.Class.forName(Class.java:242)         at org.jpox.PMFContext.getImplementationCreator(PMFContext.java:77)         at org.jpox.store.rdbms.table.ColumnCreator.createColumnsForReferenceField(ColumnCreator.java:288)         at org.jpox.store.rdbms.table.ColumnCreator.createColumnsForField(ColumnCreator.java:411)         at org.jpox.store.rdbms.table.ColumnCreator.createColumnsForJoinTables(ColumnCreator.java:145)         at org.jpox.store.rdbms.table.ArrayTable.initialize(ArrayTable.java:93)         at org.jpox.store.rdbms.RDBMSManager$ClassAdder.addClassTablesAndValidate(RDBMSManager.java:2613)         at org.jpox.store.rdbms.RDBMSManager$ClassAdder.run(RDBMSManager.java:2225)         at org.jpox.store.rdbms.RDBMSManager$MgmtTransaction.execute(RDBMSManager.java:2081)         at org.jpox.store.rdbms.RDBMSManager.addClasses(RDBMSManager.java:576)         at org.jpox.store.rdbms.RDBMSManager.addClass(RDBMSManager.java:590)         at org.jpox.store.StoreManager.getDatastoreClass(StoreManager.java:983)         at org.jpox.state.StateManagerImpl.populateStrategyFields(StateManagerImpl.java:770)         at org.jpox.state.StateManagerImpl.<init>(StateManagerImpl.java:575)         at org.jpox.AbstractPersistenceManager.internalMakePersistent(AbstractPersistenceManager.java:1149)         at org.jpox.AbstractPersistenceManager.makePersistent(AbstractPersistenceManager.java:1205)         at org.apache.jdo.tck.models.fieldtypes.TestArrayCollections.runTest(TestArrayCollections.java:97)         at org.apache.jdo.tck.models.fieldtypes.TestArrayCollections.test(TestArrayCollections.java:73)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)         at org.apache.jdo.tck.JDO_Test.runBare(JDO_Test.java:237)         at org.apache.jdo.tck.util.BatchTestRunner.doRun(BatchTestRunner.java:107)         at org.apache.jdo.tck.util.BatchTestRunner.start(BatchTestRunner.java:147)         at org.apache.jdo.tck.util.BatchTestRunner.main(BatchTestRunner.java:122)