nks to Drew Kouri, who pointed out a discrepancy in the computation of
      the variable <b>level_1d_max</b> which meant that certain sparse grids
      requested the generation of a 1D rule of a level that was higher than
      necessary by 1.  In particular, if the Gauss-Patterson rule was involved,
      sparse grids that actually only needed rules of level 7 would ask also 
      for level 8, resulting in the computation being terminated.  This 
      problem was corrected on 25 April 2011. 
    </p>

