Index: source/zero.cpp
===================================================================
--- source/zero.cpp	(revision 1011)
+++ source/zero.cpp	(working copy)
@@ -1323,9 +1323,9 @@
 	}
 
 	/* variables to do with Jeans mass and radius */
-	colden.TotMassColl = 1.;
-	colden.tmas = 1.;
-	colden.wmas = 1.;
+	colden.TotMassColl = 0.;
+	colden.tmas = 0.;
+	colden.wmas = 0.;
 	colden.rjnmin = FLT_MAX;
 	colden.ajmmin = FLT_MAX;
 
Index: source/iter_startend.cpp
===================================================================
--- source/iter_startend.cpp	(revision 1011)
+++ source/iter_startend.cpp	(working copy)
@@ -362,10 +362,9 @@
 
 	geometry.nprint = iterations.IterPrnt[iteration-1];
 
-	/* these can't be zero since may be used in logs in prt final when abort occurs and not eval */
-	colden.TotMassColl = 1.;
-	colden.tmas = 1.;
-	colden.wmas = 1.;
+	colden.TotMassColl = 0.;
+	colden.tmas = 0.;
+	colden.wmas = 0.;
 	colden.rjnmin = FLT_MAX;
 	colden.ajmmin = FLT_MAX;