[rules-users] Errors building from sources.

Hi All, I'm trying to build from source the 4.0.x branche but some of the tests are failing and connet build sucessfull. This is the errror I'm getting: Running org.drools.integrationtests.DynamicRulesTest org.drools.RuntimeDroolsException: Unable to load dialect ' org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java' at org.drools.compiler.PackageBuilderConfiguration.addDialect( PackageBuilderConfiguration.java:160) at org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap (PackageBuilderConfiguration.java:146) at org.drools.compiler.PackageBuilderConfiguration.init( PackageBuilderConfiguration.java:121) at org.drools.compiler.PackageBuilderConfiguration.<init>( PackageBuilderConfiguration.java:98) at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java :124) at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:86) at org.drools.integrationtests.DynamicRulesTest.testDynamicRulesAddRemove( DynamicRulesTest.java:540) 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:585) at junit.framework.TestCase.runTest(TestCase.java:154) at junit.framework.TestCase.runBare(TestCase.java:127) 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:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.maven.surefire.junit.JUnitTestSet.execute( JUnitTestSet.java:213) at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet( AbstractDirectoryTestSuite.java:138) at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute( AbstractDirectoryTestSuite.java:125) at org.apache.maven.surefire.Surefire.run(Surefire.java:132) 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:585) at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess( SurefireBooter.java:290) at org.apache.maven.surefire.booter.SurefireBooter.main( SurefireBooter.java:818) Caused by: java.lang.ClassCastException: org.drools.rule.builder.dialect.java.JavaDialectConfiguration at org.drools.compiler.PackageBuilderConfiguration.addDialect( PackageBuilderConfiguration.java:155) ... 31 more Any ideas of what could be wrong here? Thanks! Pedro.