Not able to interface spectre data with Matlab

Hi All,

             I am facing this issue for some time now. Following the the snippet of the problem.

dir2='/home/abhishek/simulation/rc/spectre/schematic/psf'

dir2 =

/home/abhishek/simulation/rc/spectre/schematic/psf

data_list=cds_srr(dir2)
Error: License for the SpectreRF option could not be obtained.
??? One or more output arguments not assigned during call to "cds_innersrr".

Error in ==> cds_srr at 16
    sig = cds_innersrr(dirname);

As far as  I know I am able to run normal ADE-L transient simulation. Does SpectreRF requires additional license? I have gone through various entries on this forum . I tried to do the solutions but It didn't help.

Other information is as follows :-

1) Transient results are in psf format.

2) Also checked cds_srr function also it is there at the concerned location.

3) Typing cds_srr only doesn't give any error in matlab command prompt.

4) Matlab- R2008a

5) mmsim- 12.1.0.347.isr3

.bashrc entries are as follows :-

export MATLAB_PATH=/home/abhishek/MATLAB/    
export LD_LIBRARY_PATH=`cds_root spectre`/tools/lib/64bit:`cds_root spectre`/tools/dfII/bin/64bit:$MATLAB_PATH/bin/glnxa64:${LD_LIBRARY_PATH}
export MATLABPATH=`cds_root spectre`/tools/spectre/matlab/64bit:${MATLAB_PATH}
export PATH=$PATH:$MATLAB_PATH/bin

Kindly let me know where I am making the mistake.

Best Regards

Abhishek