diff --git a/include/vsg/maths/mat4.h b/include/vsg/maths/mat4.h
index 83257afc54..ad5ab16031 100644
--- a/include/vsg/maths/mat4.h
+++ b/include/vsg/maths/mat4.h
@@ -236,9 +236,8 @@ namespace vsg
     t_vec3<T> operator*(const t_vec3<T>& lhs, const t_mat4<T>& rhs)
     {
         T inv = numbers<T>::one() / (lhs[0] * rhs[3][0] + lhs[1] * rhs[3][1] + lhs[2] * rhs[3][2] + rhs[3][3]);
-        return t_vec3<T>(lhs[0] * rhs[0][0] + lhs[1] * rhs[0][1] + lhs[2] * rhs[0][2] + rhs[0][3] * inv,
-                         lhs[0] * rhs[1][0] + lhs[1] * rhs[1][1] + lhs[2] * rhs[1][2] + rhs[1][3] * inv,
-                         lhs[0] * rhs[2][0] + lhs[1] * rhs[2][1] + lhs[2] * rhs[2][2] + rhs[2][3] * inv);
+        return t_vec3<T>((lhs[0] * rhs[0][0] + lhs[1] * rhs[0][1] + lhs[2] * rhs[0][2] + rhs[0][3]) * inv,
+                         (lhs[0] * rhs[1][0] + lhs[1] * rhs[1][1] + lhs[2] * rhs[1][2] + rhs[1][3]) * inv,
+                         (lhs[0] * rhs[2][0] + lhs[1] * rhs[2][1] + lhs[2] * rhs[2][2] + rhs[2][3]) * inv);
     }
-
 } // namespace vsg
diff --git a/src/vsg/animation/CameraSampler.cpp b/src/vsg/animation/CameraSampler.cpp
index 1aaa146e58..1a222a8b55 100644
--- a/src/vsg/animation/CameraSampler.cpp
+++ b/src/vsg/animation/CameraSampler.cpp
@@ -45,6 +45,19 @@ void CameraKeyframes::read(Input& input)
         input.readObjects("path", track.value);
     }
 
+    if (input.version_greater_equal(1, 1, 15))
+    {
+        // read origin key frames
+        uint32_t num_origins = input.readValue<uint32_t>("origins");
+        origins.resize(num_origins);
+        for (auto& origin : origins)
+        {
+            input.matchPropertyName("origin");
+            input.read(1, &origin.time);
+            input.read(1, &origin.value);
+        }
+    }
+
     // read position key frames
     uint32_t num_positions = input.readValue<uint32_t>("positions");
     positions.resize(num_positions);
@@ -103,6 +116,19 @@ void CameraKeyframes::write(Output& output) const
         output.writeObjects("path", track.value);
     }
 
+    if (output.version_greater_equal(1, 1, 15))
+    {
+        // write origin key frames
+        output.writeValue<uint32_t>("origins", origins.size());
+        for (const auto& origin : origins)
+        {
+            output.writePropertyName("origin");
+            output.write(1, &origin.time);
+            output.write(1, &origin.value);
+            output.writeEndOfLine();
+        }
+    }
+
     // write position key frames
     output.writeValue<uint32_t>("positions", positions.size());
     for (const auto& position : positions)
@@ -123,15 +149,6 @@ void CameraKeyframes::write(Output& output) const
         output.writeEndOfLine();
     }
 
-    // write scale key frames
-    for (const auto& scale : fieldOfViews)
-    {
-        output.writePropertyName("fov");
-        output.write(1, &scale.time);
-        output.write(1, &scale.value);
-        output.writeEndOfLine();
-    }
-
     // write field of view key frames
     output.writeValue<uint32_t>("fieldOfViews", fieldOfViews.size());
     for (const auto& fov : fieldOfViews)
diff --git a/src/vsg/state/ColorBlendState.cpp b/src/vsg/state/ColorBlendState.cpp
index 105f50ea37..eb9993dca5 100644
--- a/src/vsg/state/ColorBlendState.cpp
+++ b/src/vsg/state/ColorBlendState.cpp
@@ -85,7 +85,7 @@ int ColorBlendState::compare(const Object& rhs_object) const
     if ((result = compare_value(logicOpEnable, rhs.logicOpEnable))) return result;
     if ((result = compare_value(logicOp, rhs.logicOp))) return result;
     if ((result = compare_value_container(attachments, rhs.attachments))) return result;
-    return compare_values(blendConstants, rhs.blendConstants, 3);
+    return compare_values(blendConstants, rhs.blendConstants, 4);
 }
 
 void ColorBlendState::read(Input& input)