diff --git a/include/math.hpp b/include/math.hpp
index f35d3440..9fc9ffe7 100644
--- a/include/math.hpp
+++ b/include/math.hpp
@@ -70,10 +70,13 @@ inline float nearf(float a, float b, float epsilon = 1e-6) {
 }
 
 /** Limits a value between a minimum and maximum
-If min > max, returns min
+If min > max, clamps the range to [max, min]
 */
 inline float clampf(float x, float min, float max) {
-	return fmaxf(fminf(x, max), min);
+	if (min <= max)
+		return fmaxf(fminf(x, max), min);
+	else
+		return fmaxf(fminf(x, min), max);
 }
 
 /** If the magnitude of x if less than eps, return 0 */
diff --git a/include/midi.hpp b/include/midi.hpp
index c1e70cbd..aff1c143 100644
--- a/include/midi.hpp
+++ b/include/midi.hpp
@@ -43,6 +43,7 @@ struct MidiIO {
 
 
 struct MidiInput : MidiIO {
+	RtMidiIn *rtMidiIn = NULL;
 	MidiInput();
 	~MidiInput();
 	virtual void onMessage(const MidiMessage &message) {}
@@ -56,6 +57,7 @@ struct MidiInputQueue : MidiInput {
 
 
 struct MidiOutput : MidiIO {
+	RtMidiOut *rtMidiOut = NULL;
 	MidiOutput();
 	~MidiOutput();
 };
diff --git a/src/app/RackScene.cpp b/src/app/RackScene.cpp
index 417e3b16..5ae0fbc5 100644
--- a/src/app/RackScene.cpp
+++ b/src/app/RackScene.cpp
@@ -11,6 +11,8 @@ namespace rack {
 
 static std::string newVersion = "";
 
+
+#if defined(RELEASE)
 static void checkVersion() {
 	json_t *resJ = requestJson(METHOD_GET, gApiHost + "/version", NULL);
 
@@ -25,6 +27,7 @@ static void checkVersion() {
 		json_decref(resJ);
 	}
 }
+#endif
 
 
 RackScene::RackScene() {
diff --git a/src/midi.cpp b/src/midi.cpp
index 1fb6ae05..7f367fec 100644
--- a/src/midi.cpp
+++ b/src/midi.cpp
@@ -43,13 +43,13 @@ bool MidiIO::isActive() {
 json_t *MidiIO::toJson() {
 	json_t *rootJ = json_object();
 	std::string deviceName = getDeviceName(device);
-	json_object_set_new(rootJ, "device", json_string(deviceName.c_str()));
+	json_object_set_new(rootJ, "deviceName", json_string(deviceName.c_str()));
 	json_object_set_new(rootJ, "channel", json_integer(channel));
 	return rootJ;
 }
 
 void MidiIO::fromJson(json_t *rootJ) {
-	json_t *deviceNameJ = json_object_get(rootJ, "device");
+	json_t *deviceNameJ = json_object_get(rootJ, "deviceName");
 	if (deviceNameJ) {
 		std::string deviceName = json_string_value(deviceNameJ);
 		// Search for device with equal name
@@ -83,13 +83,13 @@ static void midiInputCallback(double timeStamp, std::vector<unsigned char> *mess
 }
 
 MidiInput::MidiInput() {
-	RtMidiIn *rtMidiIn = new RtMidiIn();
+	rtMidiIn = new RtMidiIn();
 	rtMidi = rtMidiIn;
 	rtMidiIn->setCallback(midiInputCallback, this);
 }
 
 MidiInput::~MidiInput() {
-	delete dynamic_cast<RtMidiIn*>(rtMidi);
+	delete rtMidiIn;
 }
 
 void MidiInputQueue::onMessage(const MidiMessage &message) {
@@ -107,11 +107,12 @@ void MidiInputQueue::onMessage(const MidiMessage &message) {
 ////////////////////
 
 MidiOutput::MidiOutput() {
-	rtMidi = new RtMidiOut();
+	rtMidiOut = new RtMidiOut();
+	rtMidi = rtMidiOut;
 }
 
 MidiOutput::~MidiOutput() {
-	delete dynamic_cast<RtMidiOut*>(rtMidi);
+	delete rtMidiOut;
 }
 
 
diff --git a/src/widgets/Menu.cpp b/src/widgets/Menu.cpp
index 973362fd..91a849f0 100644
--- a/src/widgets/Menu.cpp
+++ b/src/widgets/Menu.cpp
@@ -54,7 +54,7 @@ void Menu::onScroll(EventScroll &e) {
 	if (!parent)
 		return;
 	if (!parent->box.contains(box))
-		box.pos = box.pos.plus(e.scrollRel);
+		box.pos.y += e.scrollRel.y;
 	e.consumed = true;
 }
 
diff --git a/src/widgets/MenuOverlay.cpp b/src/widgets/MenuOverlay.cpp
index 85665b66..21453a0d 100644
--- a/src/widgets/MenuOverlay.cpp
+++ b/src/widgets/MenuOverlay.cpp
@@ -9,7 +9,7 @@ void MenuOverlay::step() {
 
 	// Fit all children in the box
 	for (Widget *child : children) {
-		child->box = child->box.nudge(Rect(Vec(0, 0), parent->box.size));
+		child->box = child->box.nudge(box.zeroPos());
 	}
 }