Blocks ruleset config if ruleset not found.

Assets/Cryville/Crtr/Config/ConfigScene.cs

@@ -1,4 +1,5 @@
-using Newtonsoft.Json;
+using JetBrains.Annotations;
+using Newtonsoft.Json;
 using System;
 using System.IO;
 using System.Text;
@@ -24,6 +25,11 @@ namespace Cryville.Crtr.Config {
 			FileInfo file = new FileInfo(
 				Game.GameDataPath + "/rulesets/" + Settings.Default.LoadRuleset
 			);
+			if (!file.Exists) {
+				Popup.Create("Ruleset for the chart not found\nMake sure you have imported the ruleset");
+				ReturnToMenu();
+				return;
+			}
 			DirectoryInfo dir = file.Directory;
 			using (StreamReader reader = new StreamReader(file.FullName, Encoding.UTF8)) {
 				ruleset = JsonConvert.DeserializeObject<Ruleset>(reader.ReadToEnd(), new JsonSerializerSettings() {
@@ -62,7 +68,7 @@ namespace Cryville.Crtr.Config {
 			cat.SetActive(true);
 		}
 
-		public void ReturnToMenu() {
+		public void SaveAndReturnToMenu() {
 			Game.InputManager.Deactivate();
 			m_inputConfigPanel.proxy.SaveTo(_rscfg.inputs);
 			m_inputConfigPanel.proxy.Dispose();
@@ -72,6 +78,9 @@ namespace Cryville.Crtr.Config {
 			using (StreamWriter cfgwriter = new StreamWriter(cfgfile.FullName, false, Encoding.UTF8)) {
 				cfgwriter.Write(JsonConvert.SerializeObject(_rscfg, Game.GlobalJsonSerializerSettings));
 			}
+			ReturnToMenu();
+		}
+		public void ReturnToMenu() {
 			GameObject.Find("Master").GetComponent<Master>().ShowMenu();
 #if UNITY_5_5_OR_NEWER
 			SceneManager.UnloadSceneAsync("Config");