This function was not updated for the recent addition of the spin-lock or hard pulse offset
dimension in the specific_analyses.relax_disp.disp_data module (and hence all structures used by the
dispersion target functions). The loop_exp_frq_point() function call has been replaced by a
loop_exp_frq_offset_point() function call to allow the 'R2eff' model parameters to be looped over.
For more details, see the thread http://thread.gmane.org/gmane.science.nmr.relax.scm/19685. This
solution was mentioned at http://thread.gmane.org/gmane.science.nmr.relax.scm/19685/focus=4859.
