diff --git a/RevokeMsgPatcher/Modifier/QQLiteModifier.cs b/RevokeMsgPatcher/Modifier/QQLiteModifier.cs
index 45af711..1ef039e 100644
--- a/RevokeMsgPatcher/Modifier/QQLiteModifier.cs
+++ b/RevokeMsgPatcher/Modifier/QQLiteModifier.cs
@@ -1,5 +1,7 @@
 using RevokeMsgPatcher.Model;
 using RevokeMsgPatcher.Utils;
+using System;
+using System.Collections.Generic;
 
 namespace RevokeMsgPatcher.Modifier
 {
@@ -16,20 +18,28 @@ namespace RevokeMsgPatcher.Modifier
         /// <returns></returns>
         public override string FindInstallPath()
         {
-            string installPath = PathUtil.FindInstallPathFromRegistry("QQLite");
-            if (!IsAllFilesExist(installPath))
+            try
             {
-                foreach (string defaultPath in PathUtil.GetDefaultInstallPaths(@"Tencent\QQLite"))
+                string installPath = PathUtil.FindInstallPathFromRegistry("QQLite");
+                if (!IsAllFilesExist(installPath))
                 {
-                    if (IsAllFilesExist(defaultPath))
+                    List<string> defaultPathList = PathUtil.GetDefaultInstallPaths(@"Tencent\QQLite");
+                    foreach (string defaultPath in defaultPathList)
                     {
-                        return defaultPath;
+                        if (IsAllFilesExist(defaultPath))
+                        {
+                            return defaultPath;
+                        }
                     }
                 }
+                else
+                {
+                    return installPath;
+                }
             }
-            else
+            catch (Exception e)
             {
-                return installPath;
+                Console.WriteLine(e.Message);
             }
             return null;
         }
diff --git a/RevokeMsgPatcher/Modifier/QQModifier.cs b/RevokeMsgPatcher/Modifier/QQModifier.cs
index e52dde8..b82958b 100644
--- a/RevokeMsgPatcher/Modifier/QQModifier.cs
+++ b/RevokeMsgPatcher/Modifier/QQModifier.cs
@@ -1,5 +1,7 @@
 using RevokeMsgPatcher.Model;
 using RevokeMsgPatcher.Utils;
+using System;
+using System.Collections.Generic;
 
 namespace RevokeMsgPatcher.Modifier
 {
@@ -16,20 +18,28 @@ namespace RevokeMsgPatcher.Modifier
         /// <returns></returns>
         public override string FindInstallPath()
         {
-            string installPath = PathUtil.FindInstallPathFromRegistry("{052CFB79-9D62-42E3-8A15-DE66C2C97C3E}");
-            if (!IsAllFilesExist(installPath))
+            try
             {
-                foreach (string defaultPath in PathUtil.GetDefaultInstallPaths(@"Tencent\QQ"))
+                string installPath = PathUtil.FindInstallPathFromRegistry("{052CFB79-9D62-42E3-8A15-DE66C2C97C3E}");
+                if (!IsAllFilesExist(installPath))
                 {
-                    if (IsAllFilesExist(defaultPath))
+                    List<string> defaultPathList = PathUtil.GetDefaultInstallPaths(@"Tencent\QQ");
+                    foreach (string defaultPath in defaultPathList)
                     {
-                        return defaultPath;
+                        if (IsAllFilesExist(defaultPath))
+                        {
+                            return defaultPath;
+                        }
                     }
                 }
+                else
+                {
+                    return installPath;
+                }
             }
-            else
+            catch (Exception e)
             {
-                return installPath;
+                Console.WriteLine(e.Message);
             }
             return null;
         }
diff --git a/RevokeMsgPatcher/Modifier/WechatModifier.cs b/RevokeMsgPatcher/Modifier/WechatModifier.cs
index 690baaa..1a92ad7 100644
--- a/RevokeMsgPatcher/Modifier/WechatModifier.cs
+++ b/RevokeMsgPatcher/Modifier/WechatModifier.cs
@@ -1,5 +1,7 @@
 using RevokeMsgPatcher.Model;
 using RevokeMsgPatcher.Utils;
+using System;
+using System.Collections.Generic;
 using System.IO;
 
 namespace RevokeMsgPatcher.Modifier
@@ -18,22 +20,30 @@ namespace RevokeMsgPatcher.Modifier
         /// <returns></returns>
         public override string FindInstallPath()
         {
-            string installPath = PathUtil.FindInstallPathFromRegistry("Wechat");
-            string realPath = GetRealInstallPath(installPath);
-            if (string.IsNullOrEmpty(realPath))
+            try
             {
-                foreach (string defaultPath in PathUtil.GetDefaultInstallPaths(@"Tencent\Wechat"))
+                string installPath = PathUtil.FindInstallPathFromRegistry("Wechat");
+                string realPath = GetRealInstallPath(installPath);
+                if (string.IsNullOrEmpty(realPath))
                 {
-                    realPath = GetRealInstallPath(defaultPath);
-                    if (!string.IsNullOrEmpty(realPath))
+                    List<string> defaultPathList = PathUtil.GetDefaultInstallPaths(@"Tencent\QQ");
+                    foreach (string defaultPath in defaultPathList)
                     {
-                        return defaultPath;
+                        realPath = GetRealInstallPath(defaultPath);
+                        if (!string.IsNullOrEmpty(realPath))
+                        {
+                            return defaultPath;
+                        }
                     }
                 }
+                else
+                {
+                    return realPath;
+                }
             }
-            else
+            catch (Exception e)
             {
-                return realPath;
+                Console.WriteLine(e.Message);
             }
             return null;
         }
@@ -45,6 +55,10 @@ namespace RevokeMsgPatcher.Modifier
         /// <returns></returns>
         private string GetRealInstallPath(string basePath)
         {
+            if (basePath == null)
+            {
+                return null;
+            }
             if (IsAllFilesExist(basePath))
             {
                 return basePath;
diff --git a/RevokeMsgPatcher/Program.cs b/RevokeMsgPatcher/Program.cs
index 5046c55..58667bb 100644
--- a/RevokeMsgPatcher/Program.cs
+++ b/RevokeMsgPatcher/Program.cs
@@ -61,7 +61,7 @@ namespace RevokeMsgPatcher
             }
             catch (Exception ex)
             {
-                MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                MessageBox.Show(ex.Message + "\n" + ex.StackTrace.Trim(), "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
             }
 #endif
         }
@@ -69,12 +69,12 @@ namespace RevokeMsgPatcher
 
         static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
         {
-            MessageBox.Show(e.Exception.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            MessageBox.Show(e.Exception.Message + "\n" + e.Exception.StackTrace.Trim(), "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
         }
 
         static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
         {
-            MessageBox.Show((e.ExceptionObject as Exception).Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            MessageBox.Show((e.ExceptionObject as Exception).Message + "\n" + (e.ExceptionObject as Exception).StackTrace.Trim(), "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
         }
     }
 }