diff --git a/interface/src/scripting/PerformanceScriptingInterface.cpp b/interface/src/scripting/PerformanceScriptingInterface.cpp
index ec56e83323..fb4561aea8 100644
--- a/interface/src/scripting/PerformanceScriptingInterface.cpp
+++ b/interface/src/scripting/PerformanceScriptingInterface.cpp
@@ -16,6 +16,8 @@ std::once_flag PerformanceScriptingInterface::registry_flag;
 PerformanceScriptingInterface::PerformanceScriptingInterface() {
     std::call_once(registry_flag, [] {
         qmlRegisterType<PerformanceScriptingInterface>("PerformanceEnums", 1, 0, "PerformanceEnums");
+        qRegisterMetaType<PerformanceScriptingInterface::PerformancePreset>("PerformanceScriptingInterface::PerformancePreset");
+        qRegisterMetaType<PerformanceScriptingInterface::RefreshRateProfile>("PerformanceScriptingInterface::RefreshRateProfile");
     });
 }
 
diff --git a/interface/src/scripting/RenderScriptingInterface.cpp b/interface/src/scripting/RenderScriptingInterface.cpp
index b4b1b9864e..f7c5a4b134 100644
--- a/interface/src/scripting/RenderScriptingInterface.cpp
+++ b/interface/src/scripting/RenderScriptingInterface.cpp
@@ -22,6 +22,7 @@ std::once_flag RenderScriptingInterface::registry_flag;
 RenderScriptingInterface::RenderScriptingInterface() {
     std::call_once(registry_flag, [] {
         qmlRegisterType<RenderScriptingInterface>("RenderEnums", 1, 0, "RenderEnums");
+        qRegisterMetaType<RenderScriptingInterface::RenderMethod>("RenderScriptingInterface::RenderMethod");
     });
 }
 
diff --git a/libraries/script-engine/src/qtscript/ArrayBufferClass.cpp b/libraries/script-engine/src/qtscript/ArrayBufferClass.cpp
index e5ae13e7d4..ef4b356744 100644
--- a/libraries/script-engine/src/qtscript/ArrayBufferClass.cpp
+++ b/libraries/script-engine/src/qtscript/ArrayBufferClass.cpp
@@ -86,7 +86,7 @@ QScriptValue ArrayBufferClass::newInstance(qint32 size) {
 QScriptValue ArrayBufferClass::newInstance(const QByteArray& ba) {
     QScriptEngine* eng = engine();
     QScriptValue data = eng->newVariant(QVariant::fromValue(ba));
-    return engine()->newObject(this, data);
+    return eng->newObject(this, data);
 }
 
 QScriptValue ArrayBufferClass::construct(QScriptContext* context, QScriptEngine* engine) {
diff --git a/libraries/script-engine/src/qtscript/ScriptObjectQtProxy.cpp b/libraries/script-engine/src/qtscript/ScriptObjectQtProxy.cpp
index 17b93e77d9..02dbd31850 100644
--- a/libraries/script-engine/src/qtscript/ScriptObjectQtProxy.cpp
+++ b/libraries/script-engine/src/qtscript/ScriptObjectQtProxy.cpp
@@ -61,7 +61,7 @@ QScriptValue ScriptObjectQtProxy::newQObject(ScriptEngineQtScript* engine, QObje
         ScriptEngineQtScript::ObjectWrapperMap::const_iterator lookup = engine->_qobjectWrapperMap.find(object);
         if (lookup != engine->_qobjectWrapperMap.end()) {
             QSharedPointer<ScriptObjectQtProxy> proxy = lookup.value().lock();
-            if (proxy) return static_cast<QScriptEngine*>(engine)->newObject(proxy.get(), qengine->newVariant(QVariant::fromValue(proxy)));;
+            if (proxy) return qengine->newObject(proxy.get(), qengine->newVariant(QVariant::fromValue(proxy)));;
         }
     }
     
@@ -88,7 +88,7 @@ QScriptValue ScriptObjectQtProxy::newQObject(ScriptEngineQtScript* engine, QObje
         ScriptEngineQtScript::ObjectWrapperMap::const_iterator lookup = engine->_qobjectWrapperMap.find(object);
         if (lookup != engine->_qobjectWrapperMap.end()) {
             QSharedPointer<ScriptObjectQtProxy> proxy = lookup.value().lock();
-            if (proxy) return static_cast<QScriptEngine*>(engine)->newObject(proxy.get(), qengine->newVariant(QVariant::fromValue(proxy)));;
+            if (proxy) return qengine->newObject(proxy.get(), qengine->newVariant(QVariant::fromValue(proxy)));;
         }
 
         // register the wrapper with the engine and make sure it cleans itself up
@@ -104,7 +104,7 @@ QScriptValue ScriptObjectQtProxy::newQObject(ScriptEngineQtScript* engine, QObje
         });
     }
 
-    return static_cast<QScriptEngine*>(engine)->newObject(proxy.get(), qengine->newVariant(QVariant::fromValue(proxy)));
+    return qengine->newObject(proxy.get(), qengine->newVariant(QVariant::fromValue(proxy)));
 }
 
 ScriptObjectQtProxy* ScriptObjectQtProxy::unwrapProxy(const QScriptValue& val) {
@@ -385,7 +385,7 @@ QScriptValue ScriptVariantQtProxy::newVariant(ScriptEngineQtScript* engine, cons
         return qengine->newVariant(variant);
     }
     auto proxy = QSharedPointer<ScriptVariantQtProxy>::create(engine, variant, proto, protoProxy);
-    return static_cast<QScriptEngine*>(engine)->newObject(proxy.get(), qengine->newVariant(QVariant::fromValue(proxy)));
+    return qengine->newObject(proxy.get(), qengine->newVariant(QVariant::fromValue(proxy)));
 }
 
 ScriptVariantQtProxy* ScriptVariantQtProxy::unwrapProxy(const QScriptValue& val) {
diff --git a/libraries/ui/src/ui/TabletScriptingInterface.cpp b/libraries/ui/src/ui/TabletScriptingInterface.cpp
index 68730e186f..81a4e9c718 100644
--- a/libraries/ui/src/ui/TabletScriptingInterface.cpp
+++ b/libraries/ui/src/ui/TabletScriptingInterface.cpp
@@ -159,6 +159,8 @@ bool TabletButtonsProxyModel::filterAcceptsRow(int sourceRow,
 
 TabletScriptingInterface::TabletScriptingInterface() {
     qmlRegisterType<TabletScriptingInterface>("TabletScriptingInterface", 1, 0, "TabletEnums");
+    qRegisterMetaType<TabletScriptingInterface::TabletAudioEvents>("TabletScriptingInterface::TabletAudioEvents");
+    qRegisterMetaType<TabletScriptingInterface::TabletConstants>("TabletScriptingInterface::TabletConstants");
     qmlRegisterType<TabletButtonsProxyModel>("TabletScriptingInterface", 1, 0, "TabletButtonsProxyModel");
 }