(hope I am not double posting too many times, I tried a few times from Nabble but it looks like my message did not end up in the mailing list after all) Using the latest stable releases of JBoss AS and Drools BRMS seems to bring problems. 1. Install JBoss 4.2.1-GA 2. Drop in drools-jbrms.war I get this in the logs: 13:33:06,093 INFO [Server] JBoss (MX MicroKernel) [4.2.1.GA (build: SVNTag=JBoss_4_2_1_GA date=200707131605)] Started i n 29s:468ms 13:33:44,000 INFO [TomcatDeployer] deploy, ctxPath=/drools-jbrms, warUrl=.../tmp/deploy/tmp58253drools-jbrms-exp.war/ 13:34:15,406 INFO [STDOUT] Setting up the repository, registering node types etc. 13:34:15,468 INFO [STDOUT] DEBUG 18-04 13:34:15,453 (JackrabbitRepositoryConfigurator.java:registerNodeTypesFromCndFile :127) Attempting to regsiter node type named: {http://www.jboss.org/drools-repository/1.0}categoryNodeType 13:34:15,531 INFO [STDOUT] DEBUG 18-04 13:34:15,531 (JackrabbitRepositoryConfigurator.java:registerNodeTypesFromCndFile :127) Attempting to regsiter node type named: {http://www.jboss.org/drools-repository/1.0}stateNodeType 13:34:15,546 INFO [STDOUT] DEBUG 18-04 13:34:15,546 (JackrabbitRepositoryConfigurator.java:registerNodeTypesFromCndFile :127) Attempting to regsiter node type named: {http://www.jboss.org/drools-repository/1.0}versionableNodeType 13:34:16,468 INFO [STDOUT] DEBUG 18-04 13:34:16,468 (JackrabbitRepositoryConfigurator.java:registerNodeTypesFromCndFile :127) Attempting to regsiter node type named: {http://www.jboss.org/drools-repository/1.0}versionableAssetFolder 13:34:16,515 INFO [STDOUT] DEBUG 18-04 13:34:16,515 (JackrabbitRepositoryConfigurator.java:registerNodeTypesFromCndFile :127) Attempting to regsiter node type named: {http://www.jboss.org/drools-repository/1.0}assetNodeType 13:34:16,937 INFO [STDOUT] DEBUG 18-04 13:34:16,828 (JackrabbitRepositoryConfigurator.java:registerNodeTypesFromCndFile :127) Attempting to regsiter node type named: {http://www.jboss.org/drools-repository/1.0}packageNodeType 13:34:17,078 INFO [STDOUT] DEBUG 18-04 13:34:17,078 (RulesRepository.java:addNodeIfNew:131) Adding new node of type : nt:folder named: drools:repository to parent node named 13:34:17,078 INFO [STDOUT] DEBUG 18-04 13:34:17,078 (RulesRepository.java:addNodeIfNew:131) Adding new node of type : nt:folder named: drools:package_area to parent node named drools:repository 13:34:17,078 INFO [STDOUT] DEBUG 18-04 13:34:17,078 (RulesRepository.java:addNodeIfNew:131) Adding new node of type : nt:folder named: drools:packagesnapshot_area to parent node named drools:repository 13:34:17,078 INFO [STDOUT] DEBUG 18-04 13:34:17,078 (RulesRepository.java:addNodeIfNew:131) Adding new node of type : nt:folder named: drools:tag_area to parent node named drools:repository 13:34:17,093 INFO [STDOUT] DEBUG 18-04 13:34:17,078 (RulesRepository.java:addNodeIfNew:131) Adding new node of type : nt:folder named: drools:state_area to parent node named drools:repository 13:34:17,093 INFO [STDOUT] DEBUG 18-04 13:34:17,093 (RulesRepository.java:addNodeIfNew:131) Adding new node of type : drools:stateNodeType named: Draft to parent node named drools:state_area 13:34:23,890 INFO [STDOUT] ERROR 18-04 13:34:23,890 (Contexts.java:flushAndDestroyContexts:335) could not discover transaction status 13:34:23,921 INFO [STDOUT] ERROR 18-04 13:34:23,921 (Contexts.java:flushAndDestroyContexts:335) could not discover transaction status The could not discover transaction status -error keeps repeating. Is this a serious problem? From a quick look the webapp seems to work. One thread http://www.nabble.com/Drools-4.0.4-and-Jboss-4.2.2-GA-td16113554.html#a16... suggested commenting out parts of web.xml, this just broke my webapp completely. What's the logic behind the commenting-out, anyway?