diff --git a/@xfit/.gitignore b/@xfit/.gitignore
deleted file mode 100644
index 7022310b..00000000
--- a/@xfit/.gitignore
+++ /dev/null
@@ -1,6 +0,0 @@
-*DS_Store
-*.mat
-*.pdf
-*.eps
-*.sublime-workspace
-*.fig
\ No newline at end of file
diff --git a/@xfit/xfit.m b/@xfit/xfit.m
index 695b910a..a08528af 100644
--- a/@xfit/xfit.m
+++ b/@xfit/xfit.m
@@ -37,10 +37,9 @@
 
 
 properties (SetAccess = private)
-	best_cost
 	
-
 	% logging
+	best_cost
 	timestamp
 end
 
@@ -140,10 +139,6 @@
 end % end methods
 
 
-methods (Static)
-	b = binCost(r,a);
-end
-
 
 
 end % end classdef
diff --git a/@xolotl/integrate.m b/@xolotl/integrate.m
index 47f4e262..c5e63903 100644
--- a/@xolotl/integrate.m
+++ b/@xolotl/integrate.m
@@ -251,7 +251,7 @@
 	end
 
 	z = a + this_mech_size - 1;
-	data.(all_mechanisms{i}) = cont_state(:,a:z);
+	data = structlib.write(data, all_mechanisms{i}, cont_state(:,a:z));
 	a = z + 1;
 end