Index: trunk/psModules/src/objects/pmFootprintArrayGrow.c
===================================================================
--- trunk/psModules/src/objects/pmFootprintArrayGrow.c	(revision 18898)
+++ trunk/psModules/src/objects/pmFootprintArrayGrow.c	(revision 18900)
@@ -3,6 +3,6 @@
  * @author RHL, Princeton & IfA; EAM, IfA
  *
- * @version $Revision: 1.4 $ $Name: not supported by cvs2svn $
- * @date $Date: 2008-08-05 01:36:17 $
+ * @version $Revision: 1.5 $ $Name: not supported by cvs2svn $
+ * @date $Date: 2008-08-05 01:51:57 $
  * Copyright 2006 Institute for Astronomy, University of Hawaii
  */
@@ -44,7 +44,11 @@
     // Use a separable convolution: should be faster
     idImage = (psImage*)psBinaryOp(idImage, idImage, "MIN", psScalarAlloc(1, PS_TYPE_S32));
-    psImage *maskImage = psImageCopy(NULL, idImage, PS_TYPE_MASK);
-    psImage *grownIdImage = psImageConvolveMask(NULL, maskImage, 0xff, 0xff, -1, 1, -1, 1);
-    psFree(maskImage);
+    psImage *grownIdImage = psImageCopy(NULL, idImage, PS_TYPE_MASK);
+    if (!psImageConvolveMask(grownIdImage, grownIdImage, 0x0f, 0xf0, -1, 1, -1, 1)) {
+        psError(PS_ERR_UNKNOWN, false, "Unable to grow mask.");
+        psFree(grownIdImage);
+        psFree(idImage);
+        return NULL;
+    }
 #else
     if (r <= 0) {