diff --git a/MatterControlLib/ControlElements/StyledMessageBoxWindow.cs b/MatterControlLib/ControlElements/StyledMessageBoxWindow.cs
index e88d66d7d..eb3e6f09b 100644
--- a/MatterControlLib/ControlElements/StyledMessageBoxWindow.cs
+++ b/MatterControlLib/ControlElements/StyledMessageBoxWindow.cs
@@ -28,6 +28,7 @@ either expressed or implied, of the FreeBSD Project.
 */
 
 using System;
+using Markdig.Agg;
 using MatterHackers.Agg.Font;
 using MatterHackers.Agg.UI;
 using MatterHackers.Localizations;
@@ -58,7 +59,7 @@ namespace MatterHackers.MatterControl
 		private class MessageBoxPage : DialogPage
 		{
 			private string unwrappedMessage;
-			private TextWidget messageContainer;
+			private MarkdownWidget messageContainer;
 			private Action<bool> responseCallback;
 			bool haveResponded = false;
 
@@ -78,10 +79,9 @@ namespace MatterHackers.MatterControl
 				responseCallback = callback;
 				unwrappedMessage = message;
 
-				contentRow.AddChild(messageContainer = new TextWidget(message, textColor: theme.TextColor, pointSize: 12 * DeviceScale)
+				contentRow.AddChild(messageContainer = new MarkdownWidget(theme)
 				{
-					AutoExpandBoundsToText = true,
-					HAnchor = HAnchor.Left
+					Markdown = message,
 				});
 
 				if (extraWidgetsToAdd != null)
diff --git a/MatterControlLib/PrinterCommunication/PrinterConnection.cs b/MatterControlLib/PrinterCommunication/PrinterConnection.cs
index b2d3d426a..d88701381 100644
--- a/MatterControlLib/PrinterCommunication/PrinterConnection.cs
+++ b/MatterControlLib/PrinterCommunication/PrinterConnection.cs
@@ -39,7 +39,9 @@ using System.Threading;
 using System.Threading.Tasks;
 using MatterControl.Printing;
 using MatterHackers.Agg;
+using MatterHackers.Agg.Platform;
 using MatterHackers.Agg.UI;
+using MatterHackers.Localizations;
 using MatterHackers.MatterControl.DataStorage;
 using MatterHackers.MatterControl.PrinterCommunication.Io;
 using MatterHackers.MatterControl.PrintQueue;
@@ -971,6 +973,36 @@ namespace MatterHackers.MatterControl.PrinterCommunication
 
 										OnConnectionFailed(ConnectionFailure.UnsupportedBaudRate);
 									}
+									catch (IOException e)
+									{
+										TerminalLog.WriteLine("Exception:" + e.Message);
+										OnConnectionFailed(ConnectionFailure.IOException);
+										if (AggContext.OperatingSystem == OSType.X11 && e.Message == "Permission denied")
+										{
+											UiThread.RunOnIdle(() =>
+											{
+												string message = @"In order for MatterControl to access the serial ports on Linux, you will need to give your user account the appropriate permissions. Run these commands in a terminal to add yourself to the correct group.
+													
+Ubuntu/Debian
+--------------
+
+```
+# sudo gpasswd -a $USER dialout
+```
+
+Arch
+----
+
+```
+# sudo gpasswd -a $USER uucp
+# sudo gpasswd -a $USER lock
+```
+
+You will then need to logout and log back in to the computer for the changes to take effect. ";
+												StyledMessageBox.ShowMessageBox(message, "Permission Denied".Localize());
+											});
+										}
+									}
 									catch (Exception ex)
 									{
 										TerminalLog.WriteLine("Exception:" + ex.Message);