From bee75803f7932eec5ee295d969a2cde8a3aea51d Mon Sep 17 00:00:00 2001
From: Shannon <sdeminick@gmail.com>
Date: Fri, 6 Oct 2017 11:51:27 +1100
Subject: [PATCH] Adds file exist checks

---
 src/Umbraco.Core/PluginManager.cs | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/Umbraco.Core/PluginManager.cs b/src/Umbraco.Core/PluginManager.cs
index b6a72f74cf..9bcca8982a 100644
--- a/src/Umbraco.Core/PluginManager.cs
+++ b/src/Umbraco.Core/PluginManager.cs
@@ -82,21 +82,23 @@ namespace Umbraco.Core
                 RequiresRescanning = (CachedAssembliesHash != CurrentAssembliesHash) || CachedAssembliesHash == string.Empty;
                 //if they have changed, we need to write the new file
                 if (RequiresRescanning)
-                {
-                    // if the hash has changed, clear out the persisted list no matter what, this will force
-                    // rescanning of all plugin types including lazy ones.
-                    // http://issues.umbraco.org/issue/U4-4789
-                    File.Delete(pluginListFile);
+                {
+                    // if the hash has changed, clear out the persisted list no matter what, this will force
+                    // rescanning of all plugin types including lazy ones.
+                    // http://issues.umbraco.org/issue/U4-4789
+                    if(File.Exists(pluginListFile))
+                        File.Delete(pluginListFile);
 
                     WriteCachePluginsHash();
                 }
             }
             else
-            {
-                // if the hash has changed, clear out the persisted list no matter what, this will force
-                // rescanning of all plugin types including lazy ones.
+            {
+                // if the hash has changed, clear out the persisted list no matter what, this will force
+                // rescanning of all plugin types including lazy ones.
                 // http://issues.umbraco.org/issue/U4-4789
-                File.Delete(pluginListFile);
+                if (File.Exists(pluginListFile))
+                    File.Delete(pluginListFile);
 
                 // always set to true if we're not detecting (generally only for testing)
                 RequiresRescanning = true;