Drag & Drop produces error

[AFriendlyIrin]

Attempting to drag & drop an NSZ file onto the GUI results in the following error:
Error while adding [file] to gamelist: cannot unpack non-iterable NoneType object Traceback (most recent call last): File "C:\(...)\nsz_v4.2.1_win64_portable\lib\site-packages\nsz\gui\GameList.py", line 139, in addFiles (titleIDExtracted, versionExtracted) = FileExistingChecks.ExtractTitleIDAndVersion(fullPath) TypeError: cannot unpack non-iterable NoneType object [WARNING] [Deprecated ] Deprecated in 2.1.0, use on_drop_file event instead. Event on_dropfile will be removed in the next two releases.: Call to deprecated function on_dropfile in C:\(...)\nsz_v4.2.1_win64_portable\lib\site-packages\kivy\core\window\__init__.py line 2106.Called from C:\(...)\nsz_v4.2.1_win64_portable\lib\site-packages\kivy\core\window\__init__.py line 1045 by <lambda>().

[nicoboss]

Can you please try this again on the latest nsz_v4.4.0_win64_portable release? Drag & drop is working perfectly fine for me. In the provided error I see that extracting metadata from the NSZ file failed. Make sure you have dumped the latest prod.keys and copied it to %userprofile%/.switch