ERROR: When trying to know the Public key token fo the strong assembly using sn command you may receive an error as below: Failed to convert key to token -- The public key for assembly '(null)' was inval id.
SOLUTION: This error comes because the command options are case sensitive. The option Tp is case sensitive. C:\Program Files\Microsoft Visual Studio 9.0\VC>sn -Tp\PendingTaskReport.dll