Index: /issm/trunk/src/c/modules/ModelProcessorx/CreateParameters.cpp
===================================================================
--- /issm/trunk/src/c/modules/ModelProcessorx/CreateParameters.cpp	(revision 7115)
+++ /issm/trunk/src/c/modules/ModelProcessorx/CreateParameters.cpp	(revision 7116)
@@ -108,7 +108,7 @@
 	/*Deal with petsc options: */
 	#ifdef _SERIAL_
-		pfield=mxGetField(iomodel_handle,0,"petscoptions_analyses");
+		pfield=mxGetAssignedField(iomodel_handle,0,"petscoptions_analyses");
 		FetchData(&analyses,&numpetscoptions,pfield);
-		pfield=mxGetField(iomodel_handle,0,"petscoptions_strings");
+		pfield=mxGetAssignedField(iomodel_handle,0,"petscoptions_strings");
 		petscstrings=(char**)xmalloc(numpetscoptions*sizeof(char*)); //allocate
 		for (i=0;i<numpetscoptions;i++){