diff --git a/SimPEG/utils/Save.py b/SimPEG/utils/Save.py
index 45cc48c8..4c646971 100644
--- a/SimPEG/utils/Save.py
+++ b/SimPEG/utils/Save.py
@@ -32,7 +32,7 @@ class SimPEGTable:
 
     def saveInversion(self, invObj, dataPath):
 
-        invObj._invNode = self.inversions.addGroup('%d'%self.numChildren)
+        invObj._invNode = self.inversions.addGroup('%d'%self.inversions.numChildren)
 
         # At the start of every iteration we will create a inversion iteration node.
         def _doStartIteration_hdf5_inv(invObj):
diff --git a/requirements.txt b/requirements.txt
index 77ac05b9..6b7df820 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,3 @@ numpy
 scipy
 ipython
 matplotlib
-h5py