Index: trunk/psModules/src/imcombine/pmPSFEnvelope.c
===================================================================
--- trunk/psModules/src/imcombine/pmPSFEnvelope.c	(revision 18492)
+++ trunk/psModules/src/imcombine/pmPSFEnvelope.c	(revision 18566)
@@ -251,5 +251,5 @@
     // Don't assume Poisson errors
     pmPSFOptions *options = pmPSFOptionsAlloc(); // Options for fitting a PSF
-    options->poissonErrorsPhotLMM = true;
+    options->poissonErrorsPhotLMM = false;
     options->poissonErrorsPhotLin = false;
     options->poissonErrorsParams = false;