[jboss-as7-dev] Create new server group error

the following operation leads to the error below: [INFO] { [INFO] "operation" : "add", [INFO] "address" : { [INFO] "PROPERTY_VALUE" : { [INFO] "server-group" : "dev" [INFO] } [INFO] }, [INFO] "profile" : "default" [INFO] } [Host Controller] 13:18:39,972 INFO [org.jboss.as.domain.controller] (pool-1-thread-15) Execution exception reading host controller response: java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException [Host Controller] at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) [:1.6.0_24] [Host Controller] at java.util.concurrent.FutureTask.get(FutureTask.java:83) [:1.6.0_24] [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl.processHostFuture(DomainControllerImpl.java:582) [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl.pushToHosts(DomainControllerImpl.java:523) [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl.execute(DomainControllerImpl.java:278) [Host Controller] at org.jboss.as.controller.AbstractModelController.execute(AbstractModelController.java:101) [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl.execute(DomainControllerImpl.java:219) [Host Controller] at org.jboss.as.domain.http.server.DomainHttpServer.processRequest(DomainHttpServer.java:173) [Host Controller] at org.jboss.as.domain.http.server.DomainHttpServer.handle(DomainHttpServer.java:104) [Host Controller] at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:82) [:1.6.0_24] [Host Controller] at org.jboss.sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:80) [Host Controller] at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:85) [:1.6.0_24] [Host Controller] at org.jboss.sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:606) [Host Controller] at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:82) [:1.6.0_24] [Host Controller] at org.jboss.sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:578) [Host Controller] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [:1.6.0_24] [Host Controller] at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [:1.6.0_24] [Host Controller] at java.util.concurrent.FutureTask.run(FutureTask.java:138) [:1.6.0_24] [Host Controller] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98) [:1.6.0_24] [Host Controller] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206) [:1.6.0_24] [Host Controller] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_24] [Host Controller] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_24] [Host Controller] at java.lang.Thread.run(Thread.java:680) [:1.6.0_24] [Host Controller] at org.jboss.threads.JBossThread.run(JBossThread.java:122) [Host Controller] Caused by: java.lang.IllegalArgumentException [Host Controller] at org.jboss.dmr.ModelValue.asInt(ModelValue.java:58) [Host Controller] at org.jboss.dmr.ModelNode.asInt(ModelNode.java:117) [Host Controller] at org.jboss.as.domain.controller.DomainModelImpl.isOperationForHost(DomainModelImpl.java:249) [Host Controller] at org.jboss.as.domain.controller.DomainModelImpl.execute(DomainModelImpl.java:241) [Host Controller] at org.jboss.as.controller.AbstractModelController.execute(AbstractModelController.java:101) [Host Controller] at org.jboss.as.controller.BasicTransactionalModelController.execute(BasicTransactionalModelController.java:89) [Host Controller] at org.jboss.as.domain.controller.DomainModelImpl.executeForDomain(DomainModelImpl.java:264) [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl$LocalDomainModelAdapter.execute(DomainControllerImpl.java:899) [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl.executeOnHost(DomainControllerImpl.java:798) [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl.access$000(DomainControllerImpl.java:110) [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl$2.call(DomainControllerImpl.java:602) [Host Controller] at org.jboss.as.domain.controller.DomainControllerImpl$2.call(DomainControllerImpl.java:596) [Host Controller] ... 8 more