Can not identify the object

[Anum Saleem]

I'm using QTP 9.2. While running script i got this error repeatedly

Cannot identify the object "Login1$Password" (of class WebEdit). Verify that this object's properties match an object currently displayed in your application.

When i run the script for first time it runs perfectly but now this error occurred. I have tried all the possible solution check object properties through object repository and object spy and enable smart identification invokes:
object not unique (3 objects found) or object not found..

There is no mismatch in the properties and i also try changes the values to regular expression and also added ordinal identifier
problem is still there