From db4290c74cd06815ba05165a79c95b89028cb678 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Thu, 26 Jan 2017 13:41:12 -0500
Subject: [PATCH] add error handling

---
 Emby.Server.Implementations/Library/LibraryManager.cs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/Emby.Server.Implementations/Library/LibraryManager.cs b/Emby.Server.Implementations/Library/LibraryManager.cs
index 71ba465df4..c59a22884c 100644
--- a/Emby.Server.Implementations/Library/LibraryManager.cs
+++ b/Emby.Server.Implementations/Library/LibraryManager.cs
@@ -2593,7 +2593,7 @@ namespace Emby.Server.Implementations.Library
                 {
                     foreach (var pathInfo in libraryOptions.PathInfos)
                     {
-                        if (string.IsNullOrWhiteSpace(pathInfo.NetworkPath))
+                        if (string.IsNullOrWhiteSpace(pathInfo.Path) || string.IsNullOrWhiteSpace(pathInfo.NetworkPath))
                         {
                             continue;
                         }
@@ -2621,10 +2621,13 @@ namespace Emby.Server.Implementations.Library
 
             foreach (var map in ConfigurationManager.Configuration.PathSubstitutions)
             {
-                var substitutionResult = SubstitutePathInternal(path, map.From, map.To);
-                if (substitutionResult.Item2)
+                if (!string.IsNullOrWhiteSpace(map.From))
                 {
-                    return substitutionResult.Item1;
+                    var substitutionResult = SubstitutePathInternal(path, map.From, map.To);
+                    if (substitutionResult.Item2)
+                    {
+                        return substitutionResult.Item1;
+                    }
                 }
             }