Index: trunk/psModules/src/imcombine/pmPSFEnvelope.c
===================================================================
--- trunk/psModules/src/imcombine/pmPSFEnvelope.c	(revision 15836)
+++ trunk/psModules/src/imcombine/pmPSFEnvelope.c	(revision 15846)
@@ -245,5 +245,5 @@
     // Don't assume Poisson errors
     pmPSFOptions *options = pmPSFOptionsAlloc(); // Options for fitting a PSF
-    options->poissonErrorsPhotLMM = false;
+    options->poissonErrorsPhotLMM = true;
     options->poissonErrorsPhotLin = false;
     options->poissonErrorsParams = false;
@@ -301,5 +301,4 @@
 #endif
 
-    psFree(yOffset);
     psFree(readout);