fix(configure_game.py): fixed install button being usable at wrong times

fixed install button pushing install screen when the tag/install filters resulted in no valid options

Signed-off-by: Mythical-Github <MythicalData@gmail.com>

Author: Mythical-Github

assets/to_do_list.txt

@@ -3,7 +3,6 @@ Next:
 # automated releases pack windows exe into the linux release somehow, fix this
 # fix installs that only have ue4ss files
 # sometimes it doesn't properly remember the preferences of the checkboxes, probably related to force toggling off standard/portable
-# sometimes the install button can be pressed, when no file to install is selected, prevent this somehow
 # bring back keep mods and settings and make uninstall more robust
 
 

src/ue4ss_installer_gui/screens/configure_game.py

@@ -310,6 +310,8 @@ def push_installing_from_zip_screen_file_selection(sender, app_data, user_data):
 
 def push_installing_screen(sender, app_data, user_data):
     last_installed_file = dpg.get_value("ue4ss_file_to_install_combo_box")
+    if last_installed_file is None or last_installed_file == '':
+        return
     ue4ss_version = dpg.get_value("tags_combo_box")
     update_game_info_field_from_ui(
         user_data, "last_installed_version", last_installed_file