how to deal with problem in flash programming

when i debgu my program in niosII ,it always info fllowing message:

# ! /bin/sh# # This file was automatically generated by the Nios II IDE Flash Programmer.# # It will be overwritten when the flash programmer options change.#

cd D:/altera/work/test_flash/Debug

# Creating .flash file for the project

$SOPC_KIT_NIOS2/bin/elf2flash --base=0x00000000 --end=0x3fffff --reset=0x0 --inp

ut=test_flash.elf --output=ext_flash.flash --boot=$SOPC_KIT_NIOS2/components/alt

era_nios2/boot_loader_cfi.srec

# Programming flash with the project

$SOPC_KIT_NIOS2/bin/nios2-flash-programmer --sidp=0x00703058 --id=2410241382 --t

imestamp=1218072956 --base=0x00000000 ext_flash.flash

There are no Nios II processors available which match the values specified.

Please check that your PLD is correctly configured, downloading a new SOF

file if necessary.

why? and i have checked my processor and matchings.but it's still so.What else i have to do? waiting online for you help.