Application crashes if its configuration file is locked while it attempts to write down changed configuration

Eve-O-Preview/Configuration/ConfigurationStorage.cs

@@ -1,4 +1,5 @@
-using System.IO;
+using System;
+using System.IO;
 using Newtonsoft.Json;
 
 namespace EveOPreview.Configuration
@@ -36,8 +37,16 @@ namespace EveOPreview.Configuration
 		public void Save()
 		{
 			string rawData = JsonConvert.SerializeObject(this._thumbnailConfig, Formatting.Indented);
+			string filename = this.GetConfigFileName();
 
-			File.WriteAllText(this.GetConfigFileName(), rawData);
+			try
+			{
+				File.WriteAllText(filename, rawData);
+			}
+			catch (IOException)
+			{
+				// Ignore error if for some reason the updated config cannot be written down
+			}
 		}
 
 		private string GetConfigFileName()