Enterprise Manager Problem

I just installed 10.2. Oracle on a Windows XP machine.  I set up this little 'loopback adapter'  instructed as this is a dhcp machine.
  When i try to open EM, i get
"Error"
"java.lang.exception: Exception in sending Request::null"
contents of logfile follows:
2009-04-02 12:12:22,710 [MetricCollector:HOMETAB_THREAD600:60] ERROR

rt.DbMetricCollectorTarget _getAllData.328 - oracle.sysman.emSDK.emd.comm.CommException: Exception in sending Request :: null
oracle.sysman.emSDK.emd.comm.CommException: Exception in sending Request :: null
      at oracle.sysman.emSDK.emd.comm.EMDClient.getResponseForRequest_(EMDClient.java:1319)
      at oracle.sysman.emSDK.emd.comm.EMDClient.getResponseForRequest(EMDClient.java:1212)
      at oracle.sysman.emSDK.emd.comm.EMDClient.getMetrics(EMDClient.java:637)
      at oracle.sysman.emo.perf.metric.rt.DbHomeTab._getAllData(DbHomeTab.java:324)
      at oracle.sysman.emo.perf.metric.rt.DbHomeTab.getData(DbHomeTab.java:139)
      at oracle.sysman.emo.perf.metric.eng.MetricCached.collectCachedData(MetricCached.java:402)
      at oracle.sysman.emo.perf.metric.eng.MetricCollectorThread._collectCachedData(MetricCollectorThread.java:596)
      at oracle.sysman.emo.perf.metric.eng.MetricCollectorThread.run(MetricCollectorThread.java:320)
      at java.lang.Thread.run(Thread.java:534)
2009-04-02 12:12:42,819 [EMUI_12_12_42_/console/database/instance/sitemap] ERROR perf.sitemap initializeGeneral.398 - Failed to initialize object: ORA-20206:
ORA-06512: at "SYSMAN.EMD_DATABASE", line 1165
ORA-01403: no data found
ORA-06512: at line 1



I have dropped the database and created a new one with the same results.
Any ideas how to resolve this EM problem?