From bbd44a6adbf3ed4d08d93ac0cd3de96008ff9cfd Mon Sep 17 00:00:00 2001
From: Will Bennion <will.bennion@outlook.com>
Date: Wed, 29 Apr 2020 09:33:18 +0100
Subject: [PATCH] Fixed crash with the parameter picker when choosing a new
 path, it has a SelectPathChanged handler and the existing path is empty.

---
 .../Project-Aurora/Controls/GameStateParameterPicker.xaml.cs    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Project-Aurora/Project-Aurora/Controls/GameStateParameterPicker.xaml.cs b/Project-Aurora/Project-Aurora/Controls/GameStateParameterPicker.xaml.cs
index ded1e4a62..9db498c68 100644
--- a/Project-Aurora/Project-Aurora/Controls/GameStateParameterPicker.xaml.cs
+++ b/Project-Aurora/Project-Aurora/Controls/GameStateParameterPicker.xaml.cs
@@ -118,7 +118,7 @@ private static void SelectedPathDPChanged(DependencyObject sender, DependencyPro
             }
 
             // Raise an event informing subscribers
-            picker.SelectedPathChanged?.Invoke(picker, new SelectedPathChangedEventArgs(e.OldValue.ToString(), e.NewValue.ToString()));
+            picker.SelectedPathChanged?.Invoke(picker, new SelectedPathChangedEventArgs(e.OldValue?.ToString() ?? "", e.NewValue?.ToString() ?? ""));
         }
         #endregion