diff --git a/Program.cs b/Program.cs
index 9638302..d0edfa7 100644
--- a/Program.cs
+++ b/Program.cs
@@ -1,5 +1,6 @@
 using System.Diagnostics;
 using System.Text;
+using System.Text.RegularExpressions;
 using Discord;
 using Discord.WebSocket;
 using Microsoft.Extensions.Configuration;
@@ -28,6 +29,7 @@ namespace chord
 
 		private async void Start()
 		{
+			try {
 #if DEBUG
 			var config = new ConfigurationBuilder()
 				.AddJsonFile("config.json")
@@ -139,6 +141,8 @@ namespace chord
 
 				serverListList.OpenSelectedItem += args =>
 				{
+					channelListTree.ClearObjects();
+
 					currentSelectedGuild = guilds.Keys.ToList()[args.Item];
 
 					var channelNames = guilds.GetValueOrDefault(currentSelectedGuild)!
@@ -148,13 +152,15 @@ namespace chord
 
 					foreach (var categories in client.GetGuild(currentSelectedGuild).CategoryChannels)
 					{
-						var node = new TreeNode(categories.Name);
+						var categoryName = Regex.Replace(categories.Name, @"[^\u0000-\u007F]+", string.Empty);
+						var node = new TreeNode(categoryName);
 
 						foreach(var channel in categories.Channels)
 						{
 							if (channel.GetType().Name == "SocketTextChannel")
 							{
-								var channelNode = new TreeNode(channel.Name);
+								var channelName = Regex.Replace(categories.Name, @"[^\u0000-\u007F]+", string.Empty);
+								var channelNode = new TreeNode(channelName);
 								channelNode.Tag = new { Id = channel.Id };
 
 								node.Children.Add(channelNode);
@@ -172,6 +178,8 @@ namespace chord
 
 				channelListTree.SelectionChanged += async (arg1, arg2) =>
 				{
+					userListTree.ClearObjects();
+
 					try {
 						currentSelectedChannel = (ulong)arg2.NewValue.Tag.GetType().GetProperty("Id").GetValue(arg2.NewValue.Tag);
 					} catch {
@@ -220,7 +228,8 @@ namespace chord
 
 					foreach (var roles in client.GetGuild(currentSelectedGuild).Roles)
 					{
-						var node = new TreeNode(roles.Name);
+						var roleName = Regex.Replace(roles.Name, @"[^\u0000-\u007F]+", string.Empty);
+						var node = new TreeNode(roleName);
 
 						foreach (var users in roles.Members)
 						{
@@ -331,6 +340,9 @@ namespace chord
 
 			Application.Run();
 			Application.Shutdown();
+			} catch (System.Exception err) {
+				Console.WriteLine(err);
+			}
 		}
 
 		private Window buildChatBox(Window serverList)