NPE starting Visual Administrator.

I have a new install of R3 Enterprise 4.7 and have added J2EE. Everything is working for me (interact with SAP GUI, browse to the J@EE Start page, etc) except that I get an NPE when invoking the Visual Administrator to install the license. There's no info in the exception, just the line number (ClusterView.java:452). When the UI comes up the only item in any of the trees that can be expanded is Global Configuration -> Dispatcher. Has anyone ever seen this?
thanks
~john

Hello John,
Two things:
Was the install done without any errors/exception , check the sapinst.log
and..
Have you checked the functionality of activating the emergency user ?

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Can you see anything in the log files? Perhaps it's a permissions issue?
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/usr/sap/DEP/JC00/j2ee/cluster/server0/log/system
#1.#00505696557D00650000002A0000779100045465B00B0CB5#1218695628786
#/System/Security/Authentication
#sap.com/irj
#com.sap.engine.services.security.authentication.logincontext
#P00101959#920##n/a##f3ef9d2069ca11ddcff800505696557d
#SAPEngine_Application_Thread[impl:3]_37##0#0#Info#1
#com.sap.engine.services.security.authentication.logincontext#Plain###LOGIN.OK
User: P00101959
Authentication Stack: ticket
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1. com.sap.security.core.server.jaas.EvaluateTicketLoginModule             SUFFICIENT ok          false      false
2. com.sap.engine.services.security.server.jaas.BasicPasswordLoginModule   REQUISITE   ok          true       true
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Central Checks                                                                                true                  #
#1.#00505696557D00650000002B0000779100045465B00B1048#1218695628787
#/System/Security/Audit#sap.com/irj
#com.sap.security.core.util.SecurityAudit
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#com.sap.security.core.util.SecurityAudit#Plain###P00101959
| LOGIN.OK
| USER.CORP_LDAP.p00101959
|
| IP Address=[172.18.40.68]#
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