diff --git a/jmetal4.5.2/src/jmetal/problems/EBEs.java b/jmetal4.5.2/src/jmetal/problems/EBEs.java
index 1c97eb6..f95aea1 100644
--- a/jmetal4.5.2/src/jmetal/problems/EBEs.java
+++ b/jmetal4.5.2/src/jmetal/problems/EBEs.java
@@ -188,7 +188,7 @@ public void setNumberOfConstraintsNodes(int numberOfConstraintsNodes) {
   } // set numberOfConstraintsNodes
 
   public int getNumberOfConstraintsNodes() {
-    return numberOfWeigthHypothesis_ ;
+    return numberOfConstraintsNodes_ ;
   } // get numberOfRestrictionNodes
 
   /**
@@ -2277,6 +2277,17 @@ public void EBEsMat3DL_iRig_jRig(int e) throws JMException{
     double E=Groups_[idx][E_];
     //  elastic transversal modulus
     double G=Groups_[idx][G_];
+    if (Math.abs(Lij) < 1e-9) {
+        for (int i = 0; i < 6; i++) {
+            for (int j = 0; j < 6; j++) {
+                Kii[i][j] = 0;
+                Kij[i][j] = 0;
+                Kji[i][j] = 0;
+                Kjj[i][j] = 0;
+            }
+        }
+        return;
+    }
     // esfuerzos en nudo j por reacción de desplazamientos en i + esfuerzo en i
     Kii[0][0] = E * S / Lij;
     Kii[0][1] = 0;
@@ -4687,7 +4698,7 @@ public String EBEsReadProblems() {
       input.close();
     }
     catch (Exception ex) {
-      System.out.println("Error: data file EBEs not readed");
+      throw new RuntimeException("Error: data file EBEs not readed", ex);
     }
 
     return txt;
@@ -4911,7 +4922,6 @@ public final void EBEsReadDataFile(String fileName) throws JMException{
           yj = Node_[nj][aY_];
           zj = Node_[nj][aZ_];
           Element_[i][L_]=Math.sqrt(Math.pow((xj - xi), 2.0) + Math.pow((yj - yi), 2.0) + Math.pow((zj - zi), 2.0));
-          if(Element_[i][L_] < 0.001) Element_[i][L_] = 0.0;
         }
         txt=input.nextLine();
         txt=input.nextLine();
@@ -4956,7 +4966,7 @@ public final void EBEsReadDataFile(String fileName) throws JMException{
       input.close();
     }
     catch (Exception ex) {
-      System.out.println("Error: data file EBEs not readed");
+      throw new RuntimeException("Error: data file EBEs not readed", ex);
     }
 
   }