Error while configuring BSP in NIOS2 build software tools

Im trying to configure the BSP in nios 2(using the sopc file generated by Quartus 2),

after applying changes to bsp properties,when is BSP editor,it is showing error as following

Error executing 'nios2-bsp-editor --settings settings.bsp', unexpected return code 1.

Error message:

'nios2-bsp-editor' is not recognized as an internal or external command,

operable program or batch file.

can anyone help me solve the problem?