Index: /issm/trunk-jpl/src/c/solutionsequences/solutionsequence_sampling.cpp
===================================================================
--- /issm/trunk-jpl/src/c/solutionsequences/solutionsequence_sampling.cpp	(revision 26206)
+++ /issm/trunk-jpl/src/c/solutionsequences/solutionsequence_sampling.cpp	(revision 26207)
@@ -74,5 +74,5 @@
     femmodel->parameters->FindParam(&step,StepEnum);
     femmodel->parameters->FindParam(&phi,SamplingPhiEnum);
-    seed = seed + 13923272*step; // change default seed for transient simulations (by considering an arbitrary shif based on the step number)
+		if(seed>=0) seed = seed + 13923272*step; // change default seed for transient simulations (by considering an arbitrary shif based on the step number)
 
     GetSolutionFromInputsx(&ug,femmodel);