diff -r 9673e8cd8d75 applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C
--- a/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C	Tue May 26 11:32:46 2015 +0100
+++ b/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C	Tue May 26 15:51:07 2015 +0200
@@ -130,7 +130,7 @@
         newPatchI++;
     }
 
-    triSurfaceToAgglom.resize(localTriFaceI-1);
+    triSurfaceToAgglom.resize(localTriFaceI);
 
     triangles.shrink();
 
@@ -369,7 +369,7 @@
         }
     }
 
-    viewFactorsPatches.resize(count--);
+    viewFactorsPatches.resize(count);
 
     // total number of coarse faces
     label totalNCoarseFaces = nCoarseFaces;