Seems like latest revision (6404 - fix hudson job) can broke the build. At least it broke for me (MacOS, Java 1.5, HSQLDB) I checked Hudson build but looks like that revision was not yet built.
The error occurs in RepositoryServiceTest with following error:
20:15:22,136 FIN | [RepositoryServiceTest] === starting testNonLatinProcessName =============================
20:15:22,137 FIN | [HibernateSessionResource] ----- beginning hibernate tx 7581301 --------------------------------------------------------
### EXCEPTION ###########################################
20:15:22,148 INF | [DefaultCommandService] exception while executing command org.jbpm.test.process.RepositoryServiceTest$1@66c122
java.sql.SQLException: Unexpected token: @ in statement [select ]
at org.hsqldb.jdbc.Util.sqlException(Unknown Source)
at org.hsqldb.jdbc.jdbcStatement.fetchResult(Unknown Source)
at org.hsqldb.jdbc.jdbcStatement.executeQuery(Unknown Source)
at org.jbpm.test.process.RepositoryServiceTest$1.execute(RepositoryServiceTest.java:394)
at org.jbpm.test.process.RepositoryServiceTest$1.execute(RepositoryServiceTest.java:1)
at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:54)
at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)
at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)
at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:56)
at org.jbpm.pvm.internal.svc.SkipInterceptor.execute(SkipInterceptor.java:43)
at org.jbpm.pvm.internal.processengine.ProcessEngineImpl.execute(ProcessEngineImpl.java:300)
at org.jbpm.test.process.RepositoryServiceTest.testNonLatinProcessName(RepositoryServiceTest.java:388)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at junit.framework.TestCase.runTest(TestCase.java:164)
at junit.framework.TestCase.runBare(TestCase.java:130)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:120)
at junit.framework.TestSuite.runTest(TestSuite.java:230)
at junit.framework.TestSuite.run(TestSuite.java:225)
at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
### EXCEPTION ###########################################
20:15:22,149 FIN | [HibernateSessionResource] ----- rolling back hibernate tx 1159510 -----------------------------------------------------
20:15:22,151 FIN | [RepositoryServiceTest] === ending testNonLatinProcessName =============================