Index: tol/stdlib/math/stat/models/bayesian/bysMcmc/bsr/gibbs/_arimaBlock.tol
===================================================================
--- tol/stdlib/math/stat/models/bayesian/bysMcmc/bsr/gibbs/_arimaBlock.tol	(revision 8d5f19b9be86e0dda41765b74a0a6ef6d04f4657)
+++ tol/stdlib/math/stat/models/bayesian/bysMcmc/bsr/gibbs/_arimaBlock.tol	(revision d0e15c232c21110466aa70329ee2a6db34bd0ccb)
@@ -402,5 +402,5 @@
       Set segment     = _.NoiseDistrib[pd->resBlockNum];
       Set arima  = segment->Arima;
-      Real sigma = Sqrt(VMatDat(sigma.full,segment->SigmaIndex,1));
+      Real sigma = 1.0; //Sqrt(VMatDat(sigma.full,segment->SigmaIndex,1));
       Polyn dif  = ARIMAGetDIF(arima);
       Set factor = arima[pd->factorNum];