[nvda] more on firefox 3 error

ERROR - queueHandler.flushQueue:
Error in func manageEvent from eventQueue
Traceback (most recent call last):
 File "queueHandler.pyc", line 52, in flushQueue
 File "IAccessibleHandler.pyc", line 637, in manageEvent
 File "eventHandler.pyc", line 20, in manageEvent
 File "eventHandler.pyc", line 27, in manageEvent_appModuleLevel
 File "eventHandler.pyc", line 34, in manageEvent_defaultAppModuleLevel
 File "eventHandler.pyc", line 41, in manageEvent_virtualBufferLevel
 File "eventHandler.pyc", line 45, in manageEvent_NVDAObjectLevel
File "NVDAObjects\IAccessible\__init__.pyc", line 872, in event_valueChange 
TypeError: 'NoneType' object is unsubscriptable
This error occured on Cnet sign up form after entering a username which was in use and turning off the passthrough and cursoring to the password . I was not aware the username was in use so I guess the screen was changing as I was moving. Once the username was accepted, the protected field for the password had to be accessed by insert spacebar, not enter. 
Brian

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