Index: trunk/psLib/src/imageops/psImageGeomManip.c
===================================================================
--- trunk/psLib/src/imageops/psImageGeomManip.c	(revision 11686)
+++ trunk/psLib/src/imageops/psImageGeomManip.c	(revision 12248)
@@ -10,6 +10,6 @@
  *  @author Ross Harman, MHPCC
  *
- *  @version $Revision: 1.35 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2007-02-07 23:52:54 $
+ *  @version $Revision: 1.36 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2007-03-06 02:14:55 $
  *
  *  Copyright 2004-2005 Maui High Performance Computing Center, University of Hawaii
@@ -137,5 +137,7 @@
                 } \
                 vec->n = n; \
-                maskVec->n = n; \
+                if (maskVec) { \
+                    maskVec->n = n; \
+                } \
                 psVectorStats(myStats, vec, NULL, maskVec, maskVal); \
                 outRowData[col] = (ps##TYPE)psStatsGetValue(myStats, statistic); \