Actually show the progress dialog when we're waiting for the thread to shut down.

openlp.py

@@ -28,9 +28,10 @@ import multiprocessing
 import sys
 
 from openlp.core.common import is_win, is_macosx
+from openlp.core.common.applocation import AppLocation
 from openlp.core import main
 
-faulthandler.enable()
+faulthandler.enable(open(str(AppLocation.get_directory(AppLocation.CacheDir) / 'error.log'), 'wb'))
 
 if __name__ == '__main__':
     """

openlp/core/ui/mainwindow.py

@@ -1017,7 +1017,13 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow, RegistryProperties):
                 wait_dialog = QtWidgets.QProgressDialog('Waiting for some things to finish...', '', 0, 0, self)
                 wait_dialog.setWindowModality(QtCore.Qt.WindowModal)
                 wait_dialog.setAutoClose(False)
-                self.version_thread.wait()
+                wait_dialog.show()
+                retry = 0
+                while self.version_thread.isRunning() and retry < 10:
+                    self.application.processEvents()
+                    self.version_thread.wait(500)
+                if self.version_thread.isRunning():
+                    self.version_thread.terminate()
                 wait_dialog.close()
         except RuntimeError:
             # Ignore the RuntimeError that is thrown when Qt has already deleted the C++ thread object