Index: /trunk/ppImage/src/ppImageMeasureCrosstalk.c
===================================================================
--- /trunk/ppImage/src/ppImageMeasureCrosstalk.c	(revision 23870)
+++ /trunk/ppImage/src/ppImageMeasureCrosstalk.c	(revision 23871)
@@ -29,4 +29,5 @@
     pmChip *chip = pmFPAfileThisChip(config->files, view, "PPIMAGE.INPUT");
     pmFPA *fpa = chip->parent;
+    if (chip->cells->n != 64) return true;
 
     // for each cell (xyNM), we want to find the pixels with values above a cutoff (40k, 60k, ?)