diff --git a/AssetStudio/AssetsManager.cs b/AssetStudio/AssetsManager.cs
index ae73a49..5c95268 100644
--- a/AssetStudio/AssetsManager.cs
+++ b/AssetStudio/AssetsManager.cs
@@ -242,7 +242,7 @@ namespace AssetStudio
                 catch (Exception e)
                 {
                     Logger.Error($"Error while reading assets file {reader.FullPath} from {Path.GetFileName(originalPath)}", e);
-                    resourceFileReaders.Add(reader.FileName, reader);
+                    resourceFileReaders.TryAdd(reader.FileName, reader);
                 }
             }
             else
@@ -269,7 +269,7 @@ namespace AssetStudio
                     else
                     {
                         Logger.Verbose("Caching resource stream");
-                        resourceFileReaders[file.fileName] = subReader; //TODO
+                        resourceFileReaders.TryAdd(file.fileName, subReader); //TODO
                     }
                 }
             }
@@ -315,7 +315,7 @@ namespace AssetStudio
                             break;
                         case FileType.ResourceFile:
                             Logger.Verbose("Caching resource stream");
-                            resourceFileReaders[file.fileName] = subReader; //TODO
+                            resourceFileReaders.TryAdd(file.fileName, subReader); //TODO
                             break;
                     }
                 }
@@ -407,11 +407,8 @@ namespace AssetStudio
                             if (entryReader.FileType == FileType.ResourceFile)
                             {
                                 entryReader.Position = 0;
-                                if (!resourceFileReaders.ContainsKey(entry.Name))
-                                {
-                                    Logger.Verbose("Caching resource file");
-                                    resourceFileReaders.Add(entry.Name, entryReader);
-                                }
+                                Logger.Verbose("Caching resource file");
+                                resourceFileReaders.TryAdd(entry.Name, entryReader);
                             }
                         }
                         catch (Exception e)
@@ -525,7 +522,7 @@ namespace AssetStudio
                     else
                     {
                         Logger.Verbose("Caching resource stream");
-                        resourceFileReaders[file.fileName] = cabReader; //TODO
+                        resourceFileReaders.TryAdd(file.fileName, cabReader); //TODO
                     }
                 }
             }
@@ -568,7 +565,7 @@ namespace AssetStudio
                     else
                     {
                         Logger.Verbose("Caching resource stream");
-                        resourceFileReaders[file.fileName] = cabReader; //TODO
+                        resourceFileReaders.TryAdd(file.fileName, cabReader); //TODO
                     }
                 }
             }
diff --git a/AssetStudio/Classes/Shader.cs b/AssetStudio/Classes/Shader.cs
index f86fa67..9ad7b0f 100644
--- a/AssetStudio/Classes/Shader.cs
+++ b/AssetStudio/Classes/Shader.cs
@@ -587,8 +587,8 @@ namespace AssetStudio
         public List<UAVParameter> m_UAVParams;
         public List<SamplerParameter> m_Samplers;
 
-        public static bool HasGlobalLocalKeywordIndices(SerializedType type) => type.Match("E99740711222CD922E9A6F92FF1EB07A", "450A058C218DAF000647948F2F59DA6D", "B239746E4EC6E4D6D7BA27C84178610A");
-        public static bool HasInstancedStructuredBuffers(SerializedType type) => type.Match("E99740711222CD922E9A6F92FF1EB07A", "B239746E4EC6E4D6D7BA27C84178610A");
+        public static bool HasGlobalLocalKeywordIndices(SerializedType type) => type.Match("E99740711222CD922E9A6F92FF1EB07A", "450A058C218DAF000647948F2F59DA6D", "B239746E4EC6E4D6D7BA27C84178610A", "3FD560648A91A99210D5DDF2BE320536");
+        public static bool HasInstancedStructuredBuffers(SerializedType type) => type.Match("E99740711222CD922E9A6F92FF1EB07A", "B239746E4EC6E4D6D7BA27C84178610A", "3FD560648A91A99210D5DDF2BE320536");
         public static bool HasIsAdditionalBlob(SerializedType type) => type.Match("B239746E4EC6E4D6D7BA27C84178610A");
 
         public SerializedSubProgram(ObjectReader reader)
diff --git a/AssetStudio/ResourceReader.cs b/AssetStudio/ResourceReader.cs
index a717111..fb107a7 100644
--- a/AssetStudio/ResourceReader.cs
+++ b/AssetStudio/ResourceReader.cs
@@ -53,7 +53,7 @@ namespace AssetStudio
                 {
                     needSearch = false;
                     reader = new BinaryReader(File.OpenRead(resourceFilePath));
-                    assetsFile.assetsManager.resourceFileReaders.Add(resourceFileName, reader);
+                    assetsFile.assetsManager.resourceFileReaders.TryAdd(resourceFileName, reader);
                     return reader;
                 }
                 throw new FileNotFoundException($"Can't find the resource file {resourceFileName}");