nios ii flash programming error

First ,in a new project,I build a sopc_builder system,and add CPU,tristate_bridge,cfi_flash,sram and some PIOs.

In nios_processor setting ,reset vector set as cfi_flash, offset set as 0x0

,then run Auto_assign_Base_address and Auto_assign_IRQs in System_view,

last I generate the nios_system.

After generate OK and assign Pins OK! I compile quartus_project!

Then open the nios_ide,build software_project,set system_library_propetities,

compile system.When does this OK,I program quartus_project first and then program elf to flash by NIOS_TOOL_FLASH_PROGRAMMER.