These tests fail

Tests in error:
testScriptText(org.jbpm.examples.script.expression.ScriptExpressionTest)
testConcurrencyGraphBased(org.jbpm.examples.concurrency.graphbased.ConcurrencyGraphBasedTest)
testEndProcessInstance(org.jbpm.examples.end.processinstance.EndProcessInstanceTest)
testJavaInstantiate(org.jbpm.examples.java.JavaInstantiateTest)
testExclusiveHandlerGreat(org.jbpm.examples.exclusive.handler.ExclusiveHandlerTest)
testExclusiveHandlerImprove(org.jbpm.examples.exclusive.handler.ExclusiveHandlerTest)
testExclusiveHandlerSuck(org.jbpm.examples.exclusive.handler.ExclusiveHandlerTest)
testEsb(org.jbpm.examples.esb.EsbTest)
testStateChoiceAccept(org.jbpm.examples.state.choice.StateChoiceTest)
testStateChoiceReject(org.jbpm.examples.state.choice.StateChoiceTest)
testSql(org.jbpm.examples.sql.SqlTest)
testHql(org.jbpm.examples.hql.HqlTest)
testEndMultipleOk(org.jbpm.examples.end.multiple.EndMultipleTest)
testEndMultipleBadRequest(org.jbpm.examples.end.multiple.EndMultipleTest)
testEndMultipleInternalServerError(org.jbpm.examples.end.multiple.EndMultipleTest)
testScriptText(org.jbpm.examples.script.text.ScriptTextTest)
testExclusiveConditionsGood(org.jbpm.examples.exclusive.conditions.ExclusiveConditionsTest)
testExclusiveConditionsBad(org.jbpm.examples.exclusive.conditions.ExclusiveConditionsTest)
testExclusiveConditionsUgly(org.jbpm.examples.exclusive.conditions.ExclusiveConditionsTest)
testWaitStatesSequence(org.jbpm.examples.state.sequence.StateSequenceTest)
testTask(org.jbpm.examples.task.TaskTest)
testEndStateCompleted(org.jbpm.examples.end.state.EndStateTest)
testEndStateErrorBadRequest(org.jbpm.examples.end.state.EndStateTest)
testEndStateErrorInternalServerError(org.jbpm.examples.end.state.EndStateTest)
testExclusiveExpressionGood(org.jbpm.examples.exclusive.expression.ExclusiveExpressionTest)
testExclusiveExpressionBad(org.jbpm.examples.exclusive.expression.ExclusiveExpressionTest)
testExclusiveExpressionUgly(org.jbpm.examples.exclusive.expression.ExclusiveExpressionTest)

due to

-------------------------------------------------------------------------------
Test set: org.jbpm.examples.script.expression.ScriptExpressionTest
-------------------------------------------------------------------------------
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.272 sec <<< FAILURE!
testScriptText(org.jbpm.examples.script.expression.ScriptExpressionTest) Time elapsed: 0.225 sec <<< ERROR!
java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at javax.script.ScriptEngineManager.<init>(ScriptEngineManager.java:65)
at javax.script.ScriptEngineManager.<init>(ScriptEngineManager.java:49)
at org.jbpm.pvm.internal.wire.binding.ScriptManagerBinding.parse(ScriptManagerBinding.java:80)