diff --git a/MainWindow.cs b/MainWindow.cs
--- a/MainWindow.cs
+++ b/MainWindow.cs
@@ -31,13 +31,13 @@ public partial class MainWindow : Gtk.Wi
 {
     const string APP_VERSION = "1.7.15";
 
-    bool unsavedData = false;
-    bool shouldShutDown = false;
+    bool unsavedData;
+    bool shouldShutDown;
     List<string> profileList = new List<string>();
-    PlayerProfile profile = null;
+    PlayerProfile profile;
 
-    Gdk.Window rootWindow = null;
-    Gdk.Pixbuf screenBuffer = null;
+    Gdk.Window rootWindow;
+    Gdk.Pixbuf screenBuffer;
 
     // views
     RecipeGeneratorView generatorView;
@@ -108,12 +108,12 @@ public partial class MainWindow : Gtk.Wi
         rootWindow = Gdk.Global.DefaultRootWindow;
 
         // get its width and height
-        DesertPaintLab.AppSettings.Load();
+        AppSettings.Load();
 
         ShowPreferencesDialog();
 
         bool enableDebugMenu;
-        DesertPaintLab.AppSettings.Get("EnableDebugMenu", out enableDebugMenu);
+        AppSettings.Get("EnableDebugMenu", out enableDebugMenu);
         this.DebugAction.Visible = enableDebugMenu;
 
         ReactionRecorder.Instance.OnReactionRecorded += OnReactionRecorded;
@@ -260,8 +260,9 @@ public partial class MainWindow : Gtk.Wi
 
         if (profileList.Count > 0)
         {
-            SelectProfileDialog selectProfileDialog = new SelectProfileDialog();
-            selectProfileDialog.ProfileList = profileList;
+            SelectProfileDialog selectProfileDialog = new SelectProfileDialog {
+                ProfileList = profileList
+            };
             ResponseType resp = (ResponseType)selectProfileDialog.Run();
             selectProfileDialog.Destroy();
             string selectedProfile = selectProfileDialog.SelectedProfile;
@@ -405,8 +406,9 @@ public partial class MainWindow : Gtk.Wi
     protected virtual void OnOpenProfile(object sender, System.EventArgs e)
     {
         bool profileSelected = false;
-        SelectProfileDialog selectProfileDialog = new SelectProfileDialog();
-        selectProfileDialog.ProfileList = profileList;
+        SelectProfileDialog selectProfileDialog = new SelectProfileDialog {
+            ProfileList = profileList
+        };
         ResponseType resp = (ResponseType)selectProfileDialog.Run();
         selectProfileDialog.Destroy();
         if (resp == ResponseType.Ok) // Selected a profile.
@@ -439,12 +441,12 @@ public partial class MainWindow : Gtk.Wi
 
     protected virtual void OnAbout(object sender, System.EventArgs e)
     {
-        AboutDialog aboutDialog = new AboutDialog();
-
-        aboutDialog.ProgramName = "Desert Paint Lab";
-        aboutDialog.Version = APP_VERSION;
-        aboutDialog.Comments = "Desert Paint Lab paint reaction recorder for A Tale in the Desert";
-        aboutDialog.Authors = new string[] { "Tess Snider", "Jason Maltzen" };
+        AboutDialog aboutDialog = new AboutDialog {
+            ProgramName = "Desert Paint Lab",
+            Version = APP_VERSION,
+            Comments = "Desert Paint Lab paint reaction recorder for A Tale in the Desert",
+            Authors = new string [] { "Tess Snider", "Jason Maltzen" }
+        };
         //aboutDialog.Website = "http://www.google.com/";
         aboutDialog.Run();
         aboutDialog.Destroy();
@@ -723,33 +725,34 @@ public partial class MainWindow : Gtk.Wi
         int pixelMultiplier = 1;
         int interfaceSizeIndex = (int)(InterfaceSize.Small);
 
-        DesertPaintLab.AppSettings.Get("ScreenWidth", out screenWidth);
-        DesertPaintLab.AppSettings.Get("ScreenHeight", out screenHeight);
-        DesertPaintLab.AppSettings.Get("PixelMultiplier", out pixelMultiplier);
-        DesertPaintLab.AppSettings.Get("InterfaceSize", out interfaceSizeIndex);
+        AppSettings.Get("ScreenWidth", out screenWidth);
+        AppSettings.Get("ScreenHeight", out screenHeight);
+        AppSettings.Get("PixelMultiplier", out pixelMultiplier);
+        AppSettings.Get("InterfaceSize", out interfaceSizeIndex);
         InterfaceSize interfaceSize = (InterfaceSize)interfaceSizeIndex;
 
-        ScreenCheckDialog screenCheckDialog = new ScreenCheckDialog();
-        screenCheckDialog.DetectedScreenWidth = detectedScreenWidth;
-        screenCheckDialog.DetectedScreenHeight = detectedScreenHeight;
-        screenCheckDialog.ScreenWidth = screenWidth;
-        screenCheckDialog.ScreenHeight = screenHeight;
-        screenCheckDialog.GamePixelWidth = pixelMultiplier;
-        screenCheckDialog.InterfaceSize = interfaceSize;
+        ScreenCheckDialog screenCheckDialog = new ScreenCheckDialog {
+            DetectedScreenWidth = detectedScreenWidth,
+            DetectedScreenHeight = detectedScreenHeight,
+            ScreenWidth = screenWidth,
+            ScreenHeight = screenHeight,
+            GamePixelWidth = pixelMultiplier,
+            InterfaceSize = interfaceSize
+        };
 
         ResponseType resp = (ResponseType)screenCheckDialog.Run();
 
-        screenWidth = screenCheckDialog.ScreenWidth;
-        screenHeight = screenCheckDialog.ScreenHeight;
-        pixelMultiplier = screenCheckDialog.GamePixelWidth;
+        screenWidth = Math.Max(640, screenCheckDialog.ScreenWidth); // don't support screen smaller than 640x480 no matter what the user says
+        screenHeight = Math.Max(480, screenCheckDialog.ScreenHeight);
+        pixelMultiplier = Math.Max(1, screenCheckDialog.GamePixelWidth); // Don't allow 0/negative pixel multiplier
         interfaceSize = screenCheckDialog.InterfaceSize;
         screenCheckDialog.Destroy();
 
-        DesertPaintLab.AppSettings.Set("ScreenWidth", screenWidth);
-        DesertPaintLab.AppSettings.Set("ScreenHeight", screenHeight);
-        DesertPaintLab.AppSettings.Set("PixelMultiplier", pixelMultiplier);
-        DesertPaintLab.AppSettings.Set("InterfaceSize", (int)interfaceSize);
-        DesertPaintLab.AppSettings.Save();
+        AppSettings.Set("ScreenWidth", screenWidth);
+        AppSettings.Set("ScreenHeight", screenHeight);
+        AppSettings.Set("PixelMultiplier", pixelMultiplier);
+        AppSettings.Set("InterfaceSize", (int)interfaceSize);
+        AppSettings.Save();
 
         screenBuffer = new Gdk.Pixbuf(Gdk.Colorspace.Rgb, false, 8, screenWidth, screenHeight);
 
@@ -766,10 +769,10 @@ public partial class MainWindow : Gtk.Wi
         int pixelMultiplier = 1;
         int interfaceSizeIndex = (int)(InterfaceSize.Small);
 
-        DesertPaintLab.AppSettings.Get("ScreenWidth", out screenWidth);
-        DesertPaintLab.AppSettings.Get("ScreenHeight", out screenHeight);
-        DesertPaintLab.AppSettings.Get("PixelMultiplier", out pixelMultiplier);
-        DesertPaintLab.AppSettings.Get("InterfaceSize", out interfaceSizeIndex);
+        AppSettings.Get("ScreenWidth", out screenWidth);
+        AppSettings.Get("ScreenHeight", out screenHeight);
+        AppSettings.Get("PixelMultiplier", out pixelMultiplier);
+        AppSettings.Get("InterfaceSize", out interfaceSizeIndex);
 
         captureView.ScreenBuffer = screenBuffer;
     }