Issue in Stamps Step(1,1)

[krsunil17]

While running the stamps step(1,1) I've encountered this error.
Found inc angle file, will load the data
Loading data into matlab...
Index exceeds the number of array elements. Index must not exceed 0.

Error in ps_load_initial_isce (line 82)
bperp=bperp(day_ix);

Error in stamps (line 281)
ps_load_initial_isce(data_inc)****

Kindly help me with this.