diff --git a/rigify/README b/rigify/README
index 39e8cda65a5c3555f1795feaca1736546f77a159..69118e3ac91ec1b3e47c8d69797edf085661e67b 100644
--- a/rigify/README
+++ b/rigify/README
@@ -2,7 +2,7 @@ INTRODUCTION
 ------------
 Rigify is an auto-rigging system based on a "building blocks" paradigm.  The
 user can create a rig by putting together any combination of rig types, in any
-confguration that they want.
+configuration that they want.
 
 A rig type is something like "biped arm" or "spine" or "finger".
 
diff --git a/rigify/__init__.py b/rigify/__init__.py
index 9ffad7ac6f0890ee68d8947ccd6dba2c2f6678aa..8a443fa0bb007a01bff2d3bd52d1ff913d073816 100644
--- a/rigify/__init__.py
+++ b/rigify/__init__.py
@@ -116,13 +116,6 @@ class RigifyParameters(bpy.types.PropertyGroup):
     name = bpy.props.StringProperty()
 
 
-for rig in rig_list:
-    r = utils.get_rig_type(rig).Rig
-    try:
-        r.add_parameters(RigifyParameters)
-    except AttributeError:
-        pass
-
 
 ##### REGISTER #####
 
@@ -141,6 +134,13 @@ def register():
     IDStore.rigify_types = bpy.props.CollectionProperty(type=RigifyName)
     IDStore.rigify_active_type = bpy.props.IntProperty(name="Rigify Active Type", description="The selected rig type.")
 
+    # Add rig parameters
+    for rig in rig_list:
+        r = utils.get_rig_type(rig).Rig
+        try:
+            r.add_parameters(RigifyParameters)
+        except AttributeError:
+            pass
 
 def unregister():
     del bpy.types.PoseBone.rigify_type
diff --git a/rigify/rigs/biped/arm/ik.py b/rigify/rigs/biped/arm/ik.py
index 2b941b9e6cfb5cdc654de0fb56bf43ed9e3ef4ed..403d1d0dd5689cfd9725bbda8e662101e5fde7f5 100644
--- a/rigify/rigs/biped/arm/ik.py
+++ b/rigify/rigs/biped/arm/ik.py
@@ -158,9 +158,9 @@ class Rig:
         vispole_e.tail = vispole_e.head + Vector((0, 0, v1.length / 32))
 
         # Determine the pole offset value
-        plane = (farm_e.tail - uarm_e.head).normalize()
-        vec1 = uarm_e.x_axis.normalize()
-        vec2 = (pole_e.head - uarm_e.head).normalize()
+        plane = (farm_e.tail - uarm_e.head).normalized()
+        vec1 = uarm_e.x_axis.normalized()
+        vec2 = (pole_e.head - uarm_e.head).normalized()
         pole_offset = angle_on_plane(plane, vec1, vec2)
 
         # Object mode, get pose bones
diff --git a/rigify/rigs/biped/leg/__init__.py b/rigify/rigs/biped/leg/__init__.py
index 4c9997bf58b3529dfd63b8db6ebe36aac965e4a8..3c518320b42cda3b692cf01bf6f77cd25cbdf627 100644
--- a/rigify/rigs/biped/leg/__init__.py
+++ b/rigify/rigs/biped/leg/__init__.py
@@ -78,6 +78,7 @@ class Rig:
         group.separate_ik_layers = bpy.props.BoolProperty(name="Separate IK Control Layers:", default=False, description="Enable putting the ik controls on a separate layer from the fk controls.")
         group.ik_layers = bpy.props.BoolVectorProperty(size=32, description="Layers for the ik controls to be on.")
 
+        print("Adding thigh twist.")
         group.use_thigh_twist = bpy.props.BoolProperty(name="Thigh Twist", default=True, description="Generate the dual-bone twist setup for the thigh.")
         group.use_shin_twist = bpy.props.BoolProperty(name="Shin Twist", default=True, description="Generate the dual-bone twist setup for the shin.")
 
diff --git a/rigify/rigs/biped/leg/fk.py b/rigify/rigs/biped/leg/fk.py
index a212d44585b45e19fd0967e4e66992238d394d14..628798f8bf2f6eb909da50b5444956254412bb30 100644
--- a/rigify/rigs/biped/leg/fk.py
+++ b/rigify/rigs/biped/leg/fk.py
@@ -141,7 +141,7 @@ class Rig:
 
         # Positioning
         vec = Vector(eb[self.org_bones[3]].vector)
-        vec = vec.normalize()
+        vec.normalize()
         foot_e.tail = foot_e.head + (vec * foot_e.length)
         foot_e.roll = eb[self.org_bones[3]].roll
 
diff --git a/rigify/rigs/biped/leg/ik.py b/rigify/rigs/biped/leg/ik.py
index a04b57dc5ec7c12ce9d0762fe4e664ec1acece39..6dc232dfd4eb6c944ee4757909cc6bf890cf7dbf 100644
--- a/rigify/rigs/biped/leg/ik.py
+++ b/rigify/rigs/biped/leg/ik.py
@@ -221,7 +221,7 @@ class Rig:
 
         # Positioning
         vec = Vector(toe_e.vector)
-        vec = vec.normalize()
+        vec.normalize()
         foot_e.tail = foot_e.head + (vec * foot_e.length)
         foot_e.roll = toe_e.roll
 
@@ -281,9 +281,9 @@ class Rig:
         foot_ik_target_e.tail = Vector(org_foot_e.tail)
 
         # Determine the pole offset value
-        plane = (shin_e.tail - thigh_e.head).normalize()
-        vec1 = thigh_e.x_axis.normalize()
-        vec2 = (pole_e.head - thigh_e.head).normalize()
+        plane = (shin_e.tail - thigh_e.head).normalized()
+        vec1 = thigh_e.x_axis.normalized()
+        vec2 = (pole_e.head - thigh_e.head).normalized()
         pole_offset = angle_on_plane(plane, vec1, vec2)
 
         # Object mode, get pose bones