NullPointerException in java.io.ObjectInputStream.inputClassFields

Randomly, while starting a managed server, the following exception is logged in the log files. What does it mean, and how can I resolve this.
I am using Weblogic Server 7.0 Sp1 with JDK 1.3.1_08.
Exception Trace:
The WebLogic Server did not start up properly.
Exception raised:
java.lang.NullPointerException
at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2266)
at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:514)
at weblogic.management.internal.DynamicMBeanImpl.readObject(DynamicMBeanImpl.java:2167)
at java.lang.reflect.Method.invoke(Native Method)
at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2209)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1406)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at java.util.ArrayList.readObject(ArrayList.java:526)
at java.lang.reflect.Method.invoke(Native Method)
at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2209)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1406)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at weblogic.management.ManagedServerAdmin.bootstrapLocalServer(ManagedServerAdmin.java:214)
at weblogic.management.ManagedServerAdmin.initialize(ManagedServerAdmin.java:122)
at weblogic.t3.srvr.T3Srvr.initialize1(T3Srvr.java:659)
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:589)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:277)
at weblogic.Server.main(Server.java:32)
--------------- nested within: ------------------
weblogic.management.configuration.ConfigurationException: Exception encountered connecting to http://machine1:7001/wl_management_internal2/
Bootstrap - with nested exception:
[java.lang.NullPointerException]
at weblogic.management.ManagedServerAdmin.bootstrapLocalServer(ManagedServerAdmin.java:235)
at weblogic.management.ManagedServerAdmin.initialize(ManagedServerAdmin.java:122)
at weblogic.t3.srvr.T3Srvr.initialize1(T3Srvr.java:659)
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:589)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:277)
at weblogic.Server.main(Server.java:32)
Reason: Fatal initialization exception
Throwable: weblogic.management.configuration.ConfigurationException: Exception encountered connecting to http://machine1:7001/wl_management
_internal2/Bootstrap - with nested exception:
[java.lang.NullPointerException]
java.lang.NullPointerException
at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2266)
at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:514)
at weblogic.management.internal.DynamicMBeanImpl.readObject(DynamicMBeanImpl.java:2167)
at java.lang.reflect.Method.invoke(Native Method)
at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2209)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1406)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at java.util.ArrayList.readObject(ArrayList.java:526)
at java.lang.reflect.Method.invoke(Native Method)
at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2209)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1406)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at weblogic.management.ManagedServerAdmin.bootstrapLocalServer(ManagedServerAdmin.java:214)
at weblogic.management.ManagedServerAdmin.initialize(ManagedServerAdmin.java:122)
at weblogic.t3.srvr.T3Srvr.initialize1(T3Srvr.java:659)
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:589)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:277)
at weblogic.Server.main(Server.java:32)
--------------- nested within: ------------------
weblogic.management.configuration.ConfigurationException: Exception encountered connecting to http://machine1:7001/wl_management_internal2/
Bootstrap - with nested exception:
[java.lang.NullPointerException]
at weblogic.management.ManagedServerAdmin.bootstrapLocalServer(ManagedServerAdmin.java:235)
at weblogic.management.ManagedServerAdmin.initialize(ManagedServerAdmin.java:122)
at weblogic.t3.srvr.T3Srvr.initialize1(T3Srvr.java:659)
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:589)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:277)
at weblogic.Server.main(Server.java:32)
Please provide some help.
-Michael

Thanks,
I'm using AWT list - and viewing the applet through IE5 - i also have the java plugin.
(If i place rt.jar in the archive of the .html file all works fine)
However if not i keep getting the following error (as a print stack trace):
java.lang.ClassNotFoundException
     at java/io/ObjectInputStream.loadClass0 (ObjectInputStream.java)
     at java/io/ObjectInputStream.resolveClass (ObjectInputStream.java)
     at java/io/ObjectInputStream.readClassDescriptor (ObjectInputStream.java)
     at java/io/ObjectInputStream.readNewObject (ObjectInputStream.java)
     at java/io/ObjectInputStream.readObject (ObjectInputStream.java)
     at java/io/ObjectInputStream.goToEndOfBlockData (ObjectInputStream.java)
     at java/io/ObjectInputStream.readNewObject (ObjectInputStream.java)
     at java/io/ObjectInputStream.readObject (ObjectInputStream.java)
     at Ticker/Ticker.getData (Ticker.java:205)
     at Ticker/Ticker.init (Ticker.java:159)
     at Ticker/TickerApplet.start (TickerApplet.java:199)
     at com/ms/applet/AppletPanel.securedCall0 (AppletPanel.java)
     at com/ms/applet/AppletPanel.securedCall (AppletPanel.java)
     at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
     at com/ms/applet/AppletPanel.run (AppletPanel.java)
     at java/lang/Thread.run (Thread.java)

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              > weblogic.management.configuration.ConfigurationException: connecting to
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              > [java.lang.NullPointerException]
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              > at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:359)
              > at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:206)
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              > ***************************************************************************
              >
              >
              >
              

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    Edited by: MSTCrowT on Feb 13, 2008 7:13 PM

    hi
    i guess you are trying to access local file from applet.
    refer this link.. hope this will help you.
    http://www.google.com/search?q=read+local+file+from+APPLET&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-
    regards
    Aniruddha

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         at com.sun.deploy.security.CredentialManager$CredentialPersistor.access$000(Unknown Source)
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         at com.sun.deploy.security.MSCredentialManager.<init>(Unknown Source)
         at com.sun.deploy.security.MSCredentialManager.getInstance(Unknown Source)
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    agein it happens to every java applet i see online

    Britteney26 wrote:
    i bought a gatway computer with windows 7 on it and the linksys wusb600n wireless adapter-its supposed to be compatible with windows seven but its really not. does anyone know a good adapter that works? i have a linksys router too.
    Brittney26, A Windows Vista Driver should be compatible with the item in the event you cannot obtain a Windows 7 Driver for it. Have you also tried to perform an update through the Windows Update function of your operating system?
    *******DISCLAIMER********
    I am not an employee of BBY in any shape or form. All information presented in my replies or postings is my own opinion. It is up to you , the end user to determine the ultimate validity of any information presented on these forums.

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