Index: trunk/psModules/src/imcombine/pmSubtractionKernels.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtractionKernels.c	(revision 14455)
+++ trunk/psModules/src/imcombine/pmSubtractionKernels.c	(revision 14476)
@@ -461,5 +461,5 @@
     }
 
-    kernels->subIndex = inner + num / 2;
+    kernels->subIndex = numInner/2 + numGaussianVars;
     assert(kernels->u->data.S32[kernels->subIndex] == 0 &&
            kernels->v->data.S32[kernels->subIndex] == 0);