Index: trunk/psModules/src/objects/pmModel.c
===================================================================
--- trunk/psModules/src/objects/pmModel.c	(revision 30621)
+++ trunk/psModules/src/objects/pmModel.c	(revision 31153)
@@ -41,4 +41,5 @@
     psFree(tmp->params);
     psFree(tmp->dparams);
+    psFree(tmp->covar);
     psTrace("psModules.objects", 10, "---- %s() end ----\n", __func__);
 }
@@ -66,4 +67,5 @@
     tmp->chisqNorm = NAN;
     tmp->nDOF  = 0;
+    tmp->nPar  = 0;
     tmp->nPix  = 0;
     tmp->nIter = 0;
@@ -71,4 +73,5 @@
     tmp->flags = PM_MODEL_STATUS_NONE;
     tmp->residuals = NULL;              // do not free: the model does not own this memory
+    tmp->covar = NULL;
     tmp->isPCM = false;