diff --git a/OKEGui/OKEGui/Task/ChapterService.cs b/OKEGui/OKEGui/Task/ChapterService.cs
index 23ec8c92..3ae85912 100644
--- a/OKEGui/OKEGui/Task/ChapterService.cs
+++ b/OKEGui/OKEGui/Task/ChapterService.cs
@@ -67,21 +67,23 @@ public static ChapterInfo LoadChapter(TaskDetail task)
                 {
                     FileInfo txtChapter = new FileInfo(Path.ChangeExtension(inputFile.FullName, ".txt"));
                     if (!txtChapter.Exists) return null;
-                    chapterInfo = new OGMParser().Parse(txtChapter.FullName)[0];
+                    chapterInfo = new OGMParser().Parse(txtChapter.FullName).FirstOrDefault();
                     break;
                 }
                 case ChapterStatus.Maybe:
                 {
                     DirectoryInfo playlistDirectory =
                         new DirectoryInfo(Path.Combine(inputFile.Directory.Parent.FullName, "PLAYLIST"));
-                    chapterInfo = GetChapterFromMPLS(playlistDirectory.GetFiles("*.m2ts"), inputFile);
+                    chapterInfo = GetChapterFromMPLS(playlistDirectory.GetFiles("*.mpls"), inputFile);
                     break;
                 }
                 default:
                     return null;
             }
 
-            chapterInfo.Chapters.Sort((a, b) => (int) (a.Time - b.Time).Ticks);
+            if (chapterInfo == null) return null;
+
+            chapterInfo.Chapters.Sort((a, b) => a.Time.CompareTo(b.Time));
             chapterInfo.Chapters = chapterInfo.Chapters
                 .Where(x => task.LengthInMiliSec - x.Time.TotalMilliseconds > 1001).ToList();
             if (chapterInfo.Chapters.Count > 1 ||
diff --git a/OKEGui/OKEGui/Worker/ExecuteTaskService.cs b/OKEGui/OKEGui/Worker/ExecuteTaskService.cs
index a4df9107..df446baf 100644
--- a/OKEGui/OKEGui/Worker/ExecuteTaskService.cs
+++ b/OKEGui/OKEGui/Worker/ExecuteTaskService.cs
@@ -281,14 +281,15 @@ private void WorkerDoWork(object sender, DoWorkEventArgs e)
 
                                 // 添加章节文件
                                 ChapterInfo chapterInfo = ChapterService.LoadChapter(task);
-                                if (task.ChapterStatus == ChapterStatus.Maybe)
-                                {
-                                    task.ChapterStatus = chapterInfo == null ? ChapterStatus.No : ChapterStatus.Added;
-                                }
-
                                 if (chapterInfo != null)
                                 {
-                                    FileInfo outputChapterFile = new FileInfo(Path.ChangeExtension(task.InputFile, ".txt"));
+                                    if (task.ChapterStatus == ChapterStatus.Maybe)
+                                    {
+                                        task.ChapterStatus = ChapterStatus.Added;
+                                    }
+
+                                    FileInfo outputChapterFile =
+                                        new FileInfo(Path.ChangeExtension(task.InputFile, ".txt"));
                                     if (outputChapterFile.Exists)
                                     {
                                         File.Move(outputChapterFile.FullName, outputChapterFile.FullName + ".bak");
@@ -298,10 +299,7 @@ private void WorkerDoWork(object sender, DoWorkEventArgs e)
                                     outputChapterFile.Refresh();
                                     OKEFile chapterFile = new OKEFile(outputChapterFile);
                                     task.MediaOutFile.AddTrack(new ChapterTrack(chapterFile));
-                                }
 
-                                if (chapterInfo != null)
-                                {
                                     // 用章节文件生成qpfile
                                     string qpFileName = Path.ChangeExtension(task.InputFile, ".qpf");
                                     string qpFile = vJob.Vfr
@@ -310,6 +308,10 @@ private void WorkerDoWork(object sender, DoWorkEventArgs e)
                                     File.WriteAllText(qpFileName, qpFile);
                                     processor.AppendParameter($"--qpfile \"{qpFileName}\"");
                                 }
+                                else
+                                {
+                                    task.ChapterStatus = ChapterStatus.No;
+                                }
 
                                 // 开始压制
                                 task.CurrentStatus = "压制中";