[Bug] 2026.3.0-beta3 [Windows 10] Crashes when clicking the Converter button in settings.

[kuraikaze]

Describe the bug

In settings menu, immediate crash when clicking Converter button.

Describe the expected result

Opening of settings menu.

URL

No response

Download Options

No response

Debugging Information

App: Nickvision Parabolic
Version: 2026.3.0-beta3

Operating System: Microsoft Windows 10.0.19045
Deployment Mode: Local
Locale: en-GB
Running From: C:\Program Files\Nickvision Parabolic\Release
NativeAOT: True

Log path: C:\Users\kurai\AppData\Local\Nickvision Parabolic\app.log

yt-dlp: 2026.3.21.233500
deno: 2.7.7
ffmpeg: n8.0.1-76-gfa4ee7ab3c-20260324 
aria2: 1.37.0

{
  "Theme": 1,
  "AllowPreviewUpdates": true,
  "TranslationLanguage": "",
  "WindowGeometry": {
    "Height": 1267,
    "IsMaximized": false,
    "Width": 1689,
    "X": 858,
    "Y": 275
  },
  "InstalledYtdlpAppVersion": {
    "BaseVersion": "2026.3.21.233500",
    "PreviewLabel": ""
  },
  "InstalledDenoAppVersion": {
    "BaseVersion": "0.0.0",
    "PreviewLabel": ""
  },
  "ShowDislcaimerOnStartup": false,
  "PreventSuspend": false,
  "OverwriteExistingFiles": true,
  "LimitCharacters": true,
  "IncludeMediaIdInTitle": false,
  "IncludeAutoGeneratedSubtitles": false,
  "IncludeSuperResolutions": false,
  "PreferredVideoCodec": 0,
  "PreferredAudioCodec": 6,
  "PreferredSubtitleFormat": 0,
  "PreferredFrameRate": 0,
  "UsePartFiles": false,
  "YouTubeSponsorBlock": false,
  "SpeedLimit": 1024,
  "ProxyUrl": "",
  "CookiesBrowser": 0,
  "CookiesPath": "",
  "TranslateMetadataAndChapters": true,
  "EmbedMetadata": true,
  "RemoveSourceData": false,
  "EmbedThumbnails": true,
  "CropAudioThumbnails": false,
  "EmbedChapters": false,
  "EmbedSubtitles": true,
  "PostprocessingArguments": [],
  "UseAria": false,
  "YtdlpDiscoveryArgs": "",
  "YtdlpDownloadArgs": "",
  "MaxNumberOfActiveDownloads": 4,
  "PostprocessingThreads": 16,
  "AriaMaxConnectionsPerServer": 16,
  "AriaMinSplitSize": 20
}

{
  "DownloadImmediatelyAsVideo": false,
  "DownloadImmediatelyAsAudio": false,
  "FullFileType": 1,
  "VideoOnlyFileType": 1,
  "AudioOnlyFileType": 7,
  "VideoFormatIds": {
    "Video": "BEST_VIDEO",
    "MP4": "BEST_VIDEO",
    "MKV": "BEST_VIDEO",
    "WEBM": "BEST_VIDEO",
    "MOV": "BEST_VIDEO",
    "AVI": "BEST_VIDEO",
    "Audio": "NONE_VIDEO",
    "MP3": "NONE_VIDEO",
    "M4A": "NONE_VIDEO",
    "OPUS": "NONE_VIDEO",
    "FLAC": "NONE_VIDEO",
    "WAV": "NONE_VIDEO",
    "OGG": "NONE_VIDEO"
  },
  "AudioFormatIds": {
    "Video": "BEST_AUDIO",
    "MP4": "BEST_AUDIO",
    "MKV": "BEST_AUDIO",
    "WEBM": "BEST_AUDIO",
    "MOV": "BEST_AUDIO",
    "AVI": "BEST_AUDIO",
    "Audio": "BEST_AUDIO",
    "MP3": "BEST_AUDIO",
    "M4A": "BEST_AUDIO",
    "OPUS": "BEST_AUDIO",
    "FLAC": "BEST_AUDIO",
    "WAV": "BEST_AUDIO",
    "OGG": "BEST_AUDIO"
  },
  "SplitChapters": false,
  "ExportDescription": false,
  "PostProcessorArgumentName": "",
  "ExportM3U": false,
  "ReverseDownloadOrder": false,
  "NumberTitles": false,
  "SubtitleLanguages": [],
  "AudioBitrate": 1.7976931348623157E+308,
  "VideoResolution": {
    "Width": 2147483647,
    "Height": 2147483647
  },
  "SaveFolder": "C:\\Users\\kurai\\Downloads"
}

Additional context

Initial install was in-place, over existing beta2. Retried after clean uninstall, including manual removal of json settings files & registry entries - same result.

Log file attached:

app.log

[diego-gz]

I tried this using the portable install and it has the exact same issue (sorry for duplicate)

[diego-gz]

I tried this on my windows 11 install of Parabolic and it seems to have the exact same issue

[kuraikaze]

I forgot to add - Converter settings applied in previous versions carry over and continue to work, even if they cannot be changed in this beta.
(Indeed, the fixes you implemented for the Windows path errors for thumbnail cropping are succesful).