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.

Avatar for Username

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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Firefox crashes on startup up. A dialogue with: "[Javascript Application] DragDropUpload exception in track ReferenceError: nsDragAndDrop is not defined"

BradThomas
BradThomas
more options

Firefox will have this dialogue appear on startup. After this dialogue appears, it blocks the user from doing anything with firefox. If the OK button is pressed to remove the dialogue box, it reappears.

I'm running OS X El Capitan ver. 10.11.06

Please help!

In addition I've noticed that if the first 'tab' from firefox is closed, firefox crashes. This has been ongoing for more than a year. What gives?

Thanks,

Brad

Firefox will have this dialogue appear on startup. After this dialogue appears, it blocks the user from doing anything with firefox. If the OK button is pressed to remove the dialogue box, it reappears. I'm running OS X El Capitan ver. 10.11.06 Please help! In addition I've noticed that if the first 'tab' from firefox is closed, firefox crashes. This has been ongoing for more than a year. What gives? Thanks, Brad

All Replies (1)

the-edmeister
the-edmeister
  • Moderator
more options

We're sorry to hear that Firefox is crashing when you open it. Please do the following to give us crash IDs that will help us understand more about the crash.

  1. (OS X 10.6 or previous) Click the Finder icon in the dock. Your home folder will be selected. In the right side of the window, click the Library folder to open it. Then open the "Application Support" folder, the "Firefox" folder, the "Crash Reports" folder and finally the "submitted" folder.
    (OS X 10.7 or above) Click the Finder icon in the dock. On the menu bar, click the Go menu, hold down the option or alt key and select Library. A window will open containing your Library folder. Then open the "Application Support" folder, the "Firefox" folder, the "Crash Reports" folder and finally the "submitted" folder.
  2. Open the 5 most recent files with a text editor and copy the IDs.
  3. Paste each ID with bp- into the reply window on the forums.

You can find more information and troubleshooting steps in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.