Problem : DSP builder simulink block installation into MATLAB simulink.

Myself Sumanta is facing a problem regarding the installation of Altera (Quartus II) toolbox in Matlab (r2013a). I have installed Quartus 9.1, but as mentioned the mentioned lines -

# DSPBuilder START

<quartus_path>/dsp_builder/bin/dspb_sblocks.jar

dummyline

# DSPBuilder END

are not there in the Matlab path (<MATLAB>/toolbox/local/classpath.txt).

On using the command -

1) (cd <quartus_path>/dsp_builder/bin/matlab), the error is coming as - (Error using cd, Cannot CD to <quartus_path>/dsp_builder/bin/matlab (Directory access failure).

2) (setupDSPBuilderPath install <quartus_path>/dsp_builder/bin <quartus_path>/dsp_builder/bin/matlab <quartus_path>/dsp_builder/bin/mdllibrary), error is - (Undefined function 'setupDSPBuilderPath' for input arguments of type 'char'.)

3) (cd <quartus_path>/dsp_builder/bin/matlab), error is - (Error using cd, Cannot CD to <quartus_path>/dsp_builder/bin/matlab (Directory access failure).

Please suggest me for some solutions.