Altera Monitor Program compilation failed!

Hello,

I am trying to do following Tutorial:

Using the SDRAM on Altera’s DE2-115 Board with VHDL Designs.

This tutorial uses Altera Monitor Program software as application program.

While compiling and loading in Altera Monitor Program, I am getting following similar error:

/usr/bin/bash: nios2-elf-ld: command not found

Compilation stopped.

I tried the solutions discussed above in this thread but can't remove error.

Any help?

Thanks in advance