Index: trunk/psModules/src/imcombine/pmPSFEnvelope.c
===================================================================
--- trunk/psModules/src/imcombine/pmPSFEnvelope.c	(revision 25485)
+++ trunk/psModules/src/imcombine/pmPSFEnvelope.c	(revision 25486)
@@ -129,4 +129,5 @@
             for (int j = 4; j < psf->params->n; j++) {
                 double val = pmTrend2DEval(psf->params->data[j], x, y);
+                double err;
                 switch (psf->psfTrendMode) {
                   case PM_TREND_POLY_ORD:
@@ -136,5 +137,5 @@
                   case PM_TREND_MAP: {
                       pmTrend2D *trend = psf->params->data[j];
-                      err = psImageUnbinPixel(x, y, trend->map->err, trend->map->binning);
+                      err = psImageUnbinPixel(x, y, trend->map->error, trend->map->binning);
                       break;
                   }