Hello Raj,
You are in postprocessing phase and it looks it got completed....no now when you try to start it again it throws this error. Please check the SAPup.log.....What phase does it show.....if you do not find the phases in the postprocessing in the SAPup.log......check if you could find the ABAP****.SAR file in system. Uncompress it and check the SAPup.log there....
Reagrds,
Gaurav