diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5c68ed5..1691044 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ file(GLOB_RECURSE EDITOR_SRC "src/*.cpp")
 include_directories("include")
 
 CPMAddPackage(NAME mcolor
-        URL https://git.redacted.cc/maxine/mcolor/archive/Prerelease-7.3.zip)
+        URL https://git.redacted.cc/maxine/mcolor/archive/Prerelease-7.4.zip)
 
 CPMAddPackage(NAME jlog
         URL https://git.redacted.cc/josh/jlog/archive/Prerelease-18.zip)
@@ -45,7 +45,7 @@ CPMAddPackage(NAME JGL
         URL https://git.redacted.cc/josh/JGL/archive/Prerelease-55.zip)
 
 CPMAddPackage(NAME JUI
-        URL https://git.redacted.cc/josh/ReJUI/archive/Prerelease-6.zip)
+        URL https://git.redacted.cc/josh/ReJUI/archive/Prerelease-6.1.zip)
 
 
 if (UNIX)
diff --git a/include/App/EditorApp.hpp b/include/App/EditorApp.hpp
index 81c70a1..51e2499 100644
--- a/include/App/EditorApp.hpp
+++ b/include/App/EditorApp.hpp
@@ -82,6 +82,7 @@ public:
     JUI::UtilityBar* topbar = nullptr;
 
     JUI::Window* app_info_dialog = nullptr;
+    JUI::Text* topbar_stats = nullptr;
 #pragma endregion
 
 #pragma region Map Data
@@ -157,8 +158,48 @@ public:
 
     /// Saves the current editor's data to test.lvl.
     /// @note Placeholder until FileDialogs are added.
-    void SaveTestFile();
+    void SaveCurrentLevel() const;
     void LoadLevel(const std::filesystem::path& level_meta_path);
+    void CreateTestLevel() {
+        loaded_level = new Level();
+        loaded_level->name = "TestLevel";
+        loaded_level->author = "dawsh";
+        loaded_level->cols = 64;
+        loaded_level->rows = 64;
+        loaded_level->tileset_path = "tileset.json";
+        auto layer = new Layer();
+        layer->name = "Layer 1";
+        layer->cols = 64;
+        layer->rows = 64;
+        layer->cell_height = 16;
+        layer->cell_width = 16;
+        layer->binary_path = "layers/1.bin";
+        layer->InitGrid();
+        layer->Save();
+        loaded_level->layers.push_back(layer);
+        loaded_tileset = new Tileset();
+        loaded_tileset->name = "MegaCommando";
+        loaded_tileset->author = "dawsh";
+        loaded_tileset->tex_height = 1280;
+        loaded_tileset->tex_width = 1024;
+        loaded_tileset->tile_width = 16;
+        loaded_tileset->tile_height = 16;
+        loaded_tileset->tile_spacing = 0;
+        loaded_tileset->cols = 80;
+        loaded_tileset->rows = 60;
+        loaded_tileset->file_path = "tileset.json";
+        loaded_tileset->texture_path = "../megacommando.png";
+        loaded_tilesheet = new JGL::Texture("../megacommando.png");
+
+        write_file_contents("tileset.json", json::deparse(loaded_tileset->Serialize()));
+
+        //layer_view->UpdateComponents(loaded_level);
+
+        data_ready = true;
+
+        SaveCurrentLevel();
+
+    }
 
 
     void SizeCellIndicatorToTilesetSize();
diff --git a/include/App/LayerView.hpp b/include/App/LayerView.hpp
index ec76b9c..521f9a4 100644
--- a/include/App/LayerView.hpp
+++ b/include/App/LayerView.hpp
@@ -13,7 +13,7 @@ class LayerView : public JUI::Window
 public:
 	LayerView() : JUI::Window()
 	{
-		this->SetTitle("Layers");
+		this->Title("Layers");
 		Name("LayerView");
 
 		scroller = new JUI::ScrollingRect(this->Content());
@@ -25,15 +25,28 @@ public:
 	{
 		Parent(parent);
 	}
-	void UpdateComponents(Level* level)
+	void UpdateComponents(const Level* level)
 	{
+
+		for (auto entry : entry_elements) {
+			entry->Parent(nullptr);
+			delete entry;
+		}
+		entry_elements.clear();
+
 		for (auto layer : level->layers)
 		{
-			//auto* rect = new JUI::Rect(layout);
-			//auto* vis_chk = new JUI::Checkbox(rect);
+			auto* rect = new JUI::Rect(layout);
+			auto* label = new JUI::Text(rect);
+			label->Content(layer->name);
+			auto* vis_chk = new JUI::Checkbox(rect);
+
+
+			entry_elements.push_back(rect);
 		}
 	}
 
+	std::vector<Widget*> entry_elements;
 	JUI::ScrollingRect* scroller = nullptr;
 	JUI::VerticalListLayout* layout = nullptr;
 };
\ No newline at end of file
diff --git a/src/App/EditorApp.cpp b/src/App/EditorApp.cpp
index d880218..407ca00 100644
--- a/src/App/EditorApp.cpp
+++ b/src/App/EditorApp.cpp
@@ -5,12 +5,14 @@
 
 #include <Data/Format.hpp>
 
+#include "JUI/Widgets/FpsGraph.hpp"
+
 
 JUI::Window* EditorApp::CreateAppInfoDialogWindow(JUI::Widget* parent)
 {
     // TODO: Implement JUI structure that makes blocks of text easy to impelement.
     auto window = new JUI::Window(parent);
-    window->SetTitle("About Editor2D");
+    window->Title("About Editor2D");
     window->Size({350_px, 375_px});
     window->MinSize({350, 375});
 
@@ -21,9 +23,9 @@ JUI::Window* EditorApp::CreateAppInfoDialogWindow(JUI::Widget* parent)
     auto line_item = [&] (const std::string& text, int size = 20, const Color4& color = Colors::White) {
         auto* content = new JUI::TextRect(layout);
         content->Size({100_percent, JUI::UDim(size+5, 0)});
-        content->SetContent(text);
-        content->SetTextSize(size);
-        content->SetTextColor(color);
+        content->Content(text);
+        content->TextSize(size);
+        content->TextColor(color);
         content->BGColor(Colors::Transparent);
         content->AlignCenterHorizontally();
         content->BorderWidth(0);
@@ -59,10 +61,10 @@ JUI::Window* EditorApp::CreateAppInfoDialogWindow(JUI::Widget* parent)
     btn_layout->Padding(8_px);
 
     auto btn_item = [&] (const std::string& text) -> JUI::TextButton* {
-        JUI::TextButton* btn = new JUI::TextButton(btn_layout);
-        btn->SetContent(text);
+        auto* btn = new JUI::TextButton(btn_layout);
+        btn->Content(text);
         btn->Size({32_percent, 100_percent});
-        btn->SetTextColor(Colors::Black);
+        btn->TextColor(Colors::Black);
         btn->Center();
         return btn;
     };
@@ -188,10 +190,13 @@ void EditorApp::SavePreferences()
 
 void EditorApp::LoadTestFile()
 {
-    LoadLevel("level.json");
+    if (std::filesystem::exists("level.json"))
+        LoadLevel("level.json");
+    else
+        CreateTestLevel();
 }
 
-void EditorApp::SaveTestFile()
+void EditorApp::SaveCurrentLevel() const
 {
 
     for (auto layer : loaded_level->layers)
@@ -207,6 +212,7 @@ void EditorApp::SaveTestFile()
 
 void EditorApp::LoadLevel(const std::filesystem::path& level_meta_path)
 {
+
     loaded_level = new Level(level_meta_path);
 
     loaded_tileset = new Tileset(std::filesystem::path(loaded_level->tileset_path));
@@ -216,7 +222,7 @@ void EditorApp::LoadLevel(const std::filesystem::path& level_meta_path)
     for (auto layer : loaded_level->layers)
         layer->Load();
 
-    layer_view->UpdateComponents(loaded_level);
+    //layer_view->UpdateComponents(loaded_level);
 
     data_ready = true;
 }
@@ -233,7 +239,7 @@ JUI::Window* EditorApp::CreateTilesetViewerWindow(JUI::Widget* parent)
     using namespace JUI;
 
     auto* wind = new Window(parent);
-    wind->SetTitle("Tileset Viewer");
+    wind->Title("Tileset Viewer");
     wind->Size(JUI::UDim2::FromPixels(loaded_tilesheet->GetDimensions().x, loaded_tilesheet->GetDimensions().y+20));
     wind->SetResizable(false);
 
@@ -330,6 +336,10 @@ void EditorApp::CreateWidgets()
 
     app_info_dialog = CreateAppInfoDialogWindow(scene);
 
+    auto* fpsgraphwindow = new JUI::Window(scene);
+    auto* fpsgraph = new JUI::FpsGraph(scene);
+
+
 	console = new JUI::CommandLine(scene);
 	console->Close();
     BindConsoleCallbacks();
@@ -342,8 +352,13 @@ void EditorApp::CreateWidgets()
 
     topbar = new JUI::UtilityBar(scene);
 
+    topbar_stats = new JUI::Text(topbar);
+    topbar_stats->HorizontalTextAlign(JUI::TextAlign::H::Left);
+    topbar_stats->TextColor(Colors::Black);
+
+
     auto* file = topbar->AddSubmenu("File");
-    file->SetFont(JGL::Fonts::Jupiteroid);
+    file->Font(JGL::Fonts::Jupiteroid);
 
 
     auto* new_map = file->AddButton("New Map", [this] () mutable {
@@ -351,7 +366,7 @@ void EditorApp::CreateWidgets()
     });
 
     file->AddButton("Open");
-    file->AddButton("Save", [this]{SaveTestFile();});
+    file->AddButton("Save", [this]{SaveCurrentLevel();});
     file->AddButton("Save As");
     file->AddSeparator(2_px);
     file->AddButton("About", [this]{app_info_dialog->Toggle(); });
@@ -427,7 +442,7 @@ bool EditorApp::Open()
     LoadTestFile();
     CreateWidgets();
 
-
+    layer_view->UpdateComponents(loaded_level);
 
     return true;
 }
@@ -793,7 +808,7 @@ void EditorApp::Draw()
 void EditorApp::OnClosing()
 {
 	SavePreferences();
-    SaveTestFile();
+    SaveCurrentLevel();
 }
 
 void EditorApp::OnRefresh(float elapsed)
diff --git a/src/Data/Level.cpp b/src/Data/Level.cpp
index 295608e..1d8e75a 100644
--- a/src/Data/Level.cpp
+++ b/src/Data/Level.cpp
@@ -7,7 +7,21 @@ Level::Level(): rows(0), cols(0)
 
 Level::Level(const std::filesystem::path& path)
 {
+	if (path.empty())
+		throw std::runtime_error(std::format("Level::Level({}: blank file path provided!", path.string()));;
+	if (!std::filesystem::exists(path))
+		throw std::runtime_error(std::format("Level::Level({}): file does not exist!", path.string()));
+
+	std::string file_contents = read_file_contents(path);
+
+	if (file_contents.empty())
+		throw std::runtime_error(std::format("Level::Level({}): file contents are empty!", path.string()));
+
 	auto [json, err] = json::parse(read_file_contents(path));
+
+	if (err != "")
+		throw std::runtime_error(std::format("Level::Level({}): file contains invalid JSON: {}", path.string(), err));
+
 	Deserialize(json);
 }