Index: /trunk/psModules/src/camera/pmFPAMaskWeight.c
===================================================================
--- /trunk/psModules/src/camera/pmFPAMaskWeight.c	(revision 15306)
+++ /trunk/psModules/src/camera/pmFPAMaskWeight.c	(revision 15307)
@@ -120,7 +120,7 @@
         // Generate a (throwaway) mask image, if required
         readout->mask = psImageAlloc(image->numCols, image->numRows, PS_TYPE_U8);
-        psImageInit(readout->mask, 0);
     }
     psImage *mask = readout->mask;      // The mask pixels
+    psImageInit(mask, 0);
 
     // Dereference pointers for speed