diff --git a/Source/Modules/AppDelegate.swift b/Source/Modules/AppDelegate.swift
index d829b6b6..70e6cf6b 100644
--- a/Source/Modules/AppDelegate.swift
+++ b/Source/Modules/AppDelegate.swift
@@ -46,6 +46,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserNotificationCenterDele
 
     if !PrefMgr.shared.onlyLoadFactoryLangModelsIfNeeded { LMMgr.loadDataModelsOnAppDelegate() }
     DispatchQueue.main.async {
+      LMMgr.loadCassetteData()
       LMMgr.initUserLangModels()
       self.folderMonitor.folderDidChange = { [weak self] in
         self?.reloadOnFolderChangeHappens()
diff --git a/Source/Modules/PrefMgr_Core.swift b/Source/Modules/PrefMgr_Core.swift
index 1ec5c560..3edef76a 100644
--- a/Source/Modules/PrefMgr_Core.swift
+++ b/Source/Modules/PrefMgr_Core.swift
@@ -38,7 +38,11 @@ public class PrefMgr: PrefMgrProtocol {
   public var checkUpdateAutomatically: Bool
 
   @AppProperty(key: UserDef.kCassettePath.rawValue, defaultValue: "")
-  public var cassettePath: String
+  public var cassettePath: String {
+    didSet {
+      LMMgr.loadCassetteData()
+    }
+  }
 
   @AppProperty(key: UserDef.kUserDataFolderSpecified.rawValue, defaultValue: "")
   public var userDataFolderSpecified: String
@@ -189,6 +193,7 @@ public class PrefMgr: PrefMgrProtocol {
   public var cassetteEnabled: Bool {
     didSet {
       LMMgr.setCassetteEnabled(cassetteEnabled)  // 很重要
+      LMMgr.loadCassetteData()
     }
   }