diff --git a/MainForm.cs b/MainForm.cs
index 27d53fc..76db302 100644
--- a/MainForm.cs
+++ b/MainForm.cs
@@ -678,7 +678,6 @@ namespace bzit.bomg
 
                                 loadFileType = LoadFileType.Jsnx;
 
-                                loadFileThread.RunWorkerAsync();
                                 break;
                             }
                         }
@@ -690,8 +689,6 @@ namespace bzit.bomg
                         usePassword = false;
 
                         loadFileType = LoadFileType.Jsnx;
-
-                        loadFileThread.RunWorkerAsync();
                     }
 
                     break;
@@ -717,7 +714,6 @@ namespace bzit.bomg
 
                                 loadFileType = LoadFileType.Ryz;
 
-                                loadFileThread.RunWorkerAsync();
                                 break;
                             }
                         }
@@ -729,14 +725,23 @@ namespace bzit.bomg
                         usePassword = false;
 
                         loadFileType = LoadFileType.Ryz;
-
-                        loadFileThread.RunWorkerAsync();
                     }
 
                     break;
                 default:
+                    sessionFilename = sessionPassword = null;
+                    usePassword = false;
                     break;
             }
+
+            if (string.IsNullOrWhiteSpace(sessionFilename))
+            {
+                return;
+            }
+
+            this.IsBusy = true;
+
+            loadFileThread.RunWorkerAsync();
         }
 
         protected void loadBookmarkFile_ForJSNX(string filename, string password = "")