This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

JavaScript Application Error: videoFormats is null

  • 2 balasan
  • 10 ada masalah ini
  • 7 paparan
  • Balasan terakhir oleh MrHerbDaily

more options

Just installed FireFox 12 and updated java to ver 7 update 4. Now when I go to youtube, I get this error when clicking on ANY video.

Error: VideoFormats is null.

The video will play, but the error pop-up is annoying and I want it gone.

I have already uninstalled all previous java version including 7 and re-installed ver 7. This did not help. Disabling all plugins does not help either.

Any other suggestions?

Just installed FireFox 12 and updated java to ver 7 update 4. Now when I go to youtube, I get this error when clicking on ANY video. Error: VideoFormats is null. The video will play, but the error pop-up is annoying and I want it gone. I have already uninstalled all previous java version including 7 and re-installed ver 7. This did not help. Disabling all plugins does not help either. Any other suggestions?

All Replies (2)

more options

when you google this error message, only one result turns up & that points to a extension called "youtube mp3 podcaster" - do you happen to have it on your pc? if so, try disabling/uninstalling it...

more options

Wow, completely forgot about extensions. Turns out I have Easy YouTube Video Downloader extension. After disabling this extension the problem went away.

Thanks!