Dear All
 
I am running selenium RC. While running my regression the results are not
 consistent.
 
i.e, scripts which runs today are failing the other day. I am not sure why
 it is happening. Following are the exceptions that am getting often. I
 searched some forums and added the waitforpagetoload in many scripts. but
 still it is failing.  Kindly help what should i do to avoid this in the
 future
 
Exception 1 :
 
java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 Caused by: com.thoughtworks.selenium.SeleniumException: ERROR: Command
 execution failure. Please search the forum at http://clearspace.openqa.orgfor
 error details from the log window.  The error message is: Permission denied
 at
 com.thoughtworks.selenium.HttpCommandProcessor.throwAssertionFailureExceptionOrError(HttpCommandProcessor.java:97)
 at
 com.thoughtworks.selenium.HttpCommandProcessor.doCommand(HttpCommandProcessor.java:91)
 at com.thoughtworks.selenium.DefaultSelenium.click(DefaultSelenium.java:167)
 
Exception 2 :
 
java.lang.reflect.InvocationTargetException
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
         at java.lang.reflect.Method.invoke(Unknown Source)
 
Caused by: com.thoughtworks.selenium.SeleniumException: ERROR: Command
 execution failure. Please search the forum at
 http://clearspace.openqa.orgfor error details from the log window.
 The error message is: Unspecified
 error.
         at
 com.thoughtworks.selenium.HttpCommandProcessor.throwAssertionFailureExceptionOrError(HttpCommandProcessor.java:97)
         at
 com.thoughtworks.selenium.HttpCommandProcessor.doCommand(HttpCommandProcessor.java:91)
         at
 com.thoughtworks.selenium.DefaultSelenium.click(DefaultSelenium.java:167)
 
Exception 3 :
 
java.lang.reflect.InvocationTargetException
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
         at java.lang.reflect.Method.invoke(Unknown Source)
 
Caused by: com.thoughtworks.selenium.SeleniumException: ERROR: Current
 window or frame is closed!
         at
 com.thoughtworks.selenium.HttpCommandProcessor.throwAssertionFailureExceptionOrError(HttpCommandProcessor.java:97)
         at
 com.thoughtworks.selenium.HttpCommandProcessor.doCommand(HttpCommandProcessor.java:91)
         at
 com.thoughtworks.selenium.DefaultSelenium.open(DefaultSelenium.java:335)
 
Thanks
 
Santhosh