Update errors shouldn't re-run updater 30 seconds later so we'll catch the error

NzbDrone.Core/Update/InstallUpdateService.cs

@@ -1,4 +1,5 @@
-using System.Diagnostics;
+using System;
+using System.Diagnostics;
 using System.IO;
 using NLog;
 using NzbDrone.Common;
@@ -47,6 +48,8 @@ namespace NzbDrone.Core.Update
         }
 
         private void InstallUpdate(UpdatePackage updatePackage)
+        {
+            try
             {
                 var updateSandboxFolder = _appFolderInfo.GetUpdateSandboxFolder();
 
@@ -84,6 +87,10 @@ namespace NzbDrone.Core.Update
 
                 _logger.Error("Update process failed");
             }
-
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Update process failed", ex);
+            }
+        }
     }
 }