fixes

main.py

@@ -1,17 +1,13 @@
 import os
 import struct
-import subprocess
 import sys
 import traceback
 from pathlib import Path
 import shutil
 import zlib
 import requests
-import threading
-
 from PySide6.QtCore import QProcess
-from PySide6.QtWidgets import QApplication, QMainWindow, QFileDialog, QMessageBox, QTreeWidgetItem, QLayout, QLabel, \
+from PySide6.QtWidgets import QApplication, QMainWindow, QFileDialog, QMessageBox, QPushButton
-    QLineEdit, QPushButton
 from mainwindow import Ui_MainWindow
 
 
@@ -21,11 +17,10 @@ class MainWindow(QMainWindow):
         self.ui = Ui_MainWindow()
         self.ui.setupUi(self)
         self.giants_path = locate_giants_folder()
+        if not self.giants_path:
+            raise Exception()
         self.wdefs_path = self.giants_path / "Bin" / "wdefs.bin"
         self.giantsmain_path = self.giants_path / "GiantsMain.exe"
-
-        if not self.giants_path:
-            self.close()
         self.ui.lineEdit.textEdited.connect(self.on_textedit_changed)
         self.ui.pushButton.clicked.connect(self.on_button_clicked)
 
@@ -142,7 +137,9 @@ def ask_giants_directory() -> Path:
     QMessageBox.information(None, "Wdefs",
                             "Could not locate your Giants installation automatically.\nPlease browse to your Giants folder and select GiantsMain.exe")
     giantsmain_path, _filename = QFileDialog.getOpenFileName(None, caption="Wdefs", filter="GiantsMain.exe")
-    return Path(giantsmain_path).parent
+    if giantsmain_path:
+        return Path(giantsmain_path).parent
+    return None
 
 
 def crc(inp_bytes: bytes) -> int:
@@ -169,6 +166,9 @@ def new_exe_bytes(wdefs_bytes: bytes, giantsmain_path: Path) -> bytes:
 if __name__ == "__main__":
     app = QApplication(sys.argv)
     app.setQuitOnLastWindowClosed(True)
-    window = MainWindow()
+    try:
-    window.show()
+        window = MainWindow()
-    sys.exit(app.exec())
+        window.show()
+        sys.exit(app.exec())
+    except:
+        sys.exit(1)