Altera/Intel-CycloneII: EP2C35F48C7 - Part Quartus II, Version 9.0 Build 184 04/29/2009 SJ full Version, Service Pack 1 installed, using windows OS(XP)

I am programming our custom board, with usb-blaster, active serial, for an existing project. I am seeing the Error- Can't recognize silicon Id for device 1 I have programmed this project( *.pof) ...