Index: /issm/trunk/src/c/modules/Solverx/Solverx.cpp
===================================================================
--- /issm/trunk/src/c/modules/Solverx/Solverx.cpp	(revision 7186)
+++ /issm/trunk/src/c/modules/Solverx/Solverx.cpp	(revision 7187)
@@ -19,6 +19,5 @@
 
 	/*intermediary: */
-	int        local_m;
-	int        local_n;
+	int        local_m,local_n,global_m,global_n;
 	int        analysis_type;
 
@@ -41,5 +40,7 @@
 
 	/*First, check that f-set is not NULL, ie model is fully constrained: */
-	if(!Kff){
+	MatGetSize(Kff,&global_m,&global_n); _assert_(global_m==global_m);
+	if(!global_n){
+		printf("-------------- file: Solverx.cpp line: %i\n",__LINE__); 
 		*puf=NULL; return;
 	}