Error when building project in eclipse

I get this output in the console:

**** Build of configuration Nios II for project Hello_World2 ****

make all

Info: Building ../Hello_World2_bsp/

make --no-print-directory -C ../Hello_World2_bsp/

Makefile not up to date.

C:/Users/Nanthini/Desktop/CRC_Acceleration_Example_Design/CycloneII/CRC_System.sopcinfo has been modified since the BSP was generated.

Generate the BSP to update the Makefile, and then build again.

To generate from Eclipse:

1. Right-click the BSP project.

2. In the Nios II Menu, click Generate BSP.

To generate from the command line:

nios2-bsp-generate-files --settings=<settings file> --bsp-dir=<target bsp files directory>

make[1]: *** [public.mk] Error 1

make: *** [../Hello_World2_bsp/-recurs-make-lib] Error 2

**** Build Finished ****

It says "Launching New Configuration" has encountered a problem.

Downloading ELF process failed.

And how do I see if I included the system ID block in my SOPC/qsys design?