"Get-GPResultantSetOfPolicy : The Resultant Set of Policy (RSoP) report cannot be generated for user domain\Harish on the MYPC99 computer because there is no RSoP logging data for that user on that computer. This could be because the user has never logged onto that computer."
I haven't logged in to the error servers even once. its only giving me the results from the servers which I have logged in at least one time before.
The -path parameter specifies the output path and in Don's example he's just using the current pipeline value which should be just the computer name so it will output a single html file named for each computer name in the current working location for your console session.