JBoss 7.1.1 - NullPointer in JDBCEJBQLCompiler.visit(...)

10:23:22,312 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-7) MSC00001: Failed to start service jboss.deployment.subunit."MyCMP.ear"."my-persistence-4.3.0-SNAPSHOT.

jar".component.Auftrag.jdbc.store-manager.START: org.jboss.msc.service.StartException in service jboss.deployment.subunit."MyCMP.ear"."my-persistence-4.3.0-SNAPSHOT.jar".c

omponent.Auftrag.jdbc.store-manager.START: JBAS010785: Failed start store manager

at org.jboss.as.cmp.jdbc.JdbcStoreManagerStartService.start(JdbcStoreManagerStartService.java:46)

at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_31]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_31]

at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_31]

Caused by: java.lang.RuntimeException: JBAS018810: Error compiling EJB-QL statement for EJB 'Auftrag': select object(o) from Auftrag as o where o.aufid = ?1

at org.jboss.as.cmp.jdbc.JDBCEJBQLQuery.<init>(JDBCEJBQLQuery.java:58)

at org.jboss.as.cmp.jdbc.JDBCCommandFactory.createEJBQLQuery(JDBCCommandFactory.java:63)

at org.jboss.as.cmp.jdbc.JDBCQueryManager.start(JDBCQueryManager.java:223)

at org.jboss.as.cmp.jdbc.JDBCStoreManager.startStoreManager(JDBCStoreManager.java:239)

at org.jboss.as.cmp.jdbc.JdbcStoreManagerStartService.start(JdbcStoreManagerStartService.java:44)

... 5 more

Caused by: java.lang.NullPointerException

at org.jboss.as.cmp.jdbc.JDBCEJBQLCompiler.visit(JDBCEJBQLCompiler.java:588)

at org.jboss.as.cmp.ejbql.ASTEJBQL.jjtAccept(ASTEJBQL.java:39)

at org.jboss.as.cmp.jdbc.JDBCEJBQLCompiler.compileEJBQL(JDBCEJBQLCompiler.java:167)

at org.jboss.as.cmp.jdbc.JDBCEJBQLQuery.<init>(JDBCEJBQLQuery.java:52)

... 9 more

jbosscmp-jdbc.xml:
<entity>
<ejb-name>Auftrag</ejb-name>
<datasource>java:/MyDatasourceName</datasource>
<datasource-mapping>DB2</datasource-mapping>
<create-table>false</create-table>
<row-locking>true</row-locking>
...