Nios II Flash programmer error

Hello Everyone,

In my qsys design am using the EPCS Flash. Using Nios II programmer to flash my .sof and .elf file.

When am trying to generate flash file am getting the error message as " Error code: 2 for command: sof2flash --input="D:/de2-150/de2-150/openPOWERLINK_V2/hardware/boards/terasic-de2i-150/mn-single-dualproc_shm-drv/quartus/mnSingleDualProcDrv.sof" --output="C:/Users/Desktop/flash/mnSingleDualProcDrv_epcs_flash_controller_0.flash" --epcs " in the console window.

Hardware board : Altera de2i-150

Waiting for the quick reply.

Thanks