Index: ps/trunk/binaries/data/mods/public/gui/common/color.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/common/color.js
+++ ps/trunk/binaries/data/mods/public/gui/common/color.js
@@ -92,7 +92,11 @@
 	let h, s, l = (max + min) / 2;
 
 	if (max == min)
-		h = s = 0; // achromatic
+	{
+		// achromatic
+		h = 0;
+		s = 0;
+	}
 	else
 	{
 		let d = max - min;
@@ -108,7 +112,11 @@
 		case b:
 			h = (r - g) / d + 4;
 			break;
+		default:
+			error("rgbToHsl could not determine maximum!");
+			break;
 		}
+
 		h /= 6;
 	}
 
@@ -144,8 +152,14 @@
 	[h, s, l] = [h, s, l].map(clampColorValue);
 	let r, g, b;
 	if (s == 0)
-		r = g = b = l; // achromatic
-	else {
+	{
+		// achromatic
+		b = l;
+		r = l;
+		g = l;
+	}
+	else
+	{
 		let q = l < 0.5 ? l * (1 + s) : l + s - l * s;
 		let p = 2 * l - q;
 		r = hue2rgb(p, q, h + 1/3);
Index: ps/trunk/binaries/data/mods/public/gui/common/functions_utility.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/common/functions_utility.js
+++ ps/trunk/binaries/data/mods/public/gui/common/functions_utility.js
@@ -75,7 +75,11 @@
 	{
 		teamList = JSON.parse(unescapeText(stringifiedTeamList));
 	}
-	catch (e) {}
+	catch (e)
+	{
+		// Ignore invalid input from remote users
+		return [];
+	}
 
 	let playerData = [];
 
Index: ps/trunk/binaries/data/mods/public/gui/common/gamedescription.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/common/gamedescription.js
+++ ps/trunk/binaries/data/mods/public/gui/common/gamedescription.js
@@ -385,10 +385,10 @@
 
 	if (g_GameAttributes.settings.TriggerDifficulty !== undefined)
 	{
-		let difficulty = g_Settings.TriggerDifficulties.find(difficulty => difficulty.Difficulty == g_GameAttributes.settings.TriggerDifficulty);
+		let triggerDifficulty = g_Settings.TriggerDifficulties.find(difficulty => difficulty.Difficulty == g_GameAttributes.settings.TriggerDifficulty);
 		titles.push({
-			"label": difficulty.Title,
-			"value": difficulty.Tooltip
+			"label": triggerDifficulty.Title,
+			"value": triggerDifficulty.Tooltip
 		});
 	}
 
Index: ps/trunk/binaries/data/mods/public/gui/common/settings.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/common/settings.js
+++ ps/trunk/binaries/data/mods/public/gui/common/settings.js
@@ -425,6 +425,6 @@
  */
 function translateVictoryCondition(victoryConditionName)
 {
-	let victoryCondition = g_Settings.VictoryConditions.find(victoryCondition => victoryCondition.Name == victoryConditionName);
+	let victoryCondition = g_Settings.VictoryConditions.find(condition => condition.Name == victoryConditionName);
 	return victoryCondition ? victoryCondition.Title : translate("Unknown Victory Condition");
 }
Index: ps/trunk/binaries/data/mods/public/gui/common/tab_buttons.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/common/tab_buttons.js
+++ ps/trunk/binaries/data/mods/public/gui/common/tab_buttons.js
@@ -43,7 +43,9 @@
 		size.bottom = size.top + buttonHeight;
 		button.size = size;
 		button.tooltip = categoriesData[category].tooltip || "";
-		button.onPress = (category => function() { onPress(category); })(+category);
+
+		let categoryNum = +category;
+		button.onPress = () => { onPress(categoryNum); };
 
 		Engine.GetGUIObjectByName("tabButtonText[" + category + "]").caption = categoriesData[category].label;
 	}