I am using the latest drools 6.1.0-SNAPSHOT. I have two jars containing different versions of a KieModule, and they each contain a drl file with an event type declaration for an existing class. If I try to update the container from one version to the other, the call to KieContainer#updateToVersion returns a Results instance that contains errors related to the @timestamp attribute on that event declaration. Here is an example of the error message: "[Message [id=1, level=ERROR, path=r0.drl, line=3, column=0 text=Error creating field accessors for timestamp field 'mytime' for type 'FooEvent']]". The following .patch file can be used to add a unit test to the IncrementalCompilationTest.java file that demonstrates this problem. test_container_update_problem.patch <http://drools.46999.n3.nabble.com/file/n4030100/test_container_update_pro... After applying the patch, and running this unit test, I see the following test failure: java.lang.AssertionError: Errors detected on updateToVersion: [Message [id=1, level=ERROR, path=r0.drl, line=3, column=0 text=Error creating field accessors for timestamp field 'mytime' for type 'FooEvent']] at org.junit.Assert.fail(Assert.java:88) at org.junit.Assert.assertTrue(Assert.java:41) at org.junit.Assert.assertFalse(Assert.java:64) at org.drools.compiler.integrationtests.IncrementalCompilationTest.testUpdateWithDeclarationPresent(IncrementalCompilationTest.java:95) This error makes it nearly impossible for me to rely on and use KieContainer#updateToVersion, because I need to allow frequent changes to be made to drl files at run time, and I would prefer not to recreate the KieContainer, and all of its KieBases and KieSessions on every update. Is this a known issue? If so, are there plans to fix it before the 6.1.0.Final release? -- View this message in context: http://drools.46999.n3.nabble.com/KieContainer-updateToVersion-fails-when... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users