Fix attempt to save config when failed to load.

Assets/Cryville/Crtr/Config/ConfigPanelMaster.cs

@@ -22,6 +22,8 @@ namespace Cryville.Crtr.Config {
 		public Ruleset ruleset;
 		RulesetConfig _rscfg;
 
+		bool _loaded;
+
 		void OnEnable() {
 			try {
 				ChartPlayer.etor = new PdtEvaluator();
@@ -61,6 +63,8 @@ namespace Cryville.Crtr.Config {
 				m_inputConfigPanel.proxy = proxy;
 
 				m_inputConfigPanel.OnConfigEnable();
+
+				_loaded = true;
 			}
 			catch (Exception ex) {
 				Popup.CreateException(ex);
@@ -77,6 +81,8 @@ namespace Cryville.Crtr.Config {
 		}
 
 		void OnDisable() {
+			if (_loaded) {
+				_loaded = false;
 				m_inputConfigPanel.proxy.SaveTo(_rscfg.inputs);
 				m_inputConfigPanel.proxy.Dispose();
 				FileInfo cfgfile = new FileInfo(
@@ -88,4 +94,5 @@ namespace Cryville.Crtr.Config {
 				m_inputConfigPanel.OnConfigDisable();
 			}
 		}
+	}
 }