AS7 fails to start on jrockit JVM:

boot.log shows:

06:32:40,148 ERROR [org.jboss.msc.service.fail] MSC00001: Failed to start service jboss.as.server-controller: org.jboss.msc.service.StartException in service jboss.as.server-controller: Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1780) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_24]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_24]
at java.lang.Thread.run(Thread.java:662) [:1.6.0_24]
Caused by: java.lang.ExceptionInInitializerError
at org.jboss.as.platform.mbean.PlatformMBeanConstants.<clinit>(PlatformMBeanConstants.java:330) [jboss-as-platform-mbean-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.as.platform.mbean.PlatformMBeanResourceRegistrar.registerPlatformMBeanResources(PlatformMBeanResourceRegistrar.java:80) [jboss-as-platform-mbean-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.as.server.ServerControllerModelUtil.initOperations(ServerControllerModelUtil.java:253) [jboss-as-server-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.as.server.ServerService.initModel(ServerService.java:216) [jboss-as-server-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.as.controller.AbstractControllerService.start(AbstractControllerService.java:76) [jboss-as-controller-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.as.server.ServerService.start(ServerService.java:135) [jboss-as-server-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
... 3 more
Caused by: java.lang.NumberFormatException: For input string: "R"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) [:1.6.0_24]
at java.lang.Integer.parseInt(Integer.java:449) [:1.6.0_24]
at java.lang.Integer.valueOf(Integer.java:554) [:1.6.0_24]
at org.jboss.as.platform.mbean.PlatformMBeanUtil.<clinit>(PlatformMBeanUtil.java:55) [jboss-as-platform-mbean-7.0.2.Final.jar:7.0.2.Final]
... 11 more