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Firefox drag & drop crashes entire OS, what's happening?

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Hi everyone, experiencing a problem with firefox on my Macbook. When I try and drag & drop an image from file to an online uploader, it crashes my entire OS.

The file shrinks down to thumbnail size when hovering over the drag & drop space (as normal) but then gets stuck at that point. Then, whenever I try to click on anything at all (start-up menu, a different program) the thumbnail just appears under my cursor, I cannot click away and the whole OS becomes unresponsive. My only out as far as I can see is a hard reset.

Has anyone else experienced this problem and how do I fix it? Thanks in advance for any input.

EDIT: the problem is also present when uploading conventionally. The file uploads but then my cursor is stuck in a form of "force select" - for example if I move it over another program it'll just then drag that program around with it and refuse to drop it, thus screwing up my entire OS. I even managed to CMD+Q quit out of Firefox this time, but once initiated the problem doesn't disappear.

Hi everyone, experiencing a problem with firefox on my Macbook. When I try and drag & drop an image from file to an online uploader, it crashes my entire OS. The file shrinks down to thumbnail size when hovering over the drag & drop space (as normal) but then gets stuck at that point. Then, whenever I try to click on anything at all (start-up menu, a different program) the thumbnail just appears under my cursor, I cannot click away and the whole OS becomes unresponsive. My only out as far as I can see is a hard reset. Has anyone else experienced this problem and how do I fix it? Thanks in advance for any input. EDIT: the problem is also present when uploading conventionally. The file uploads but then my cursor is stuck in a form of "force select" - for example if I move it over another program it'll just then drag that program around with it and refuse to drop it, thus screwing up my entire OS. I even managed to CMD+Q quit out of Firefox this time, but once initiated the problem doesn't disappear.

Modified by GoGojira

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:67.0) Gecko/20100101 Firefox/67.0

More Information

FredMcD
  • Top 10 Contributor
4225 solutions 58977 answers

GoGojira said

When I try and drag & drop an image from file to an online uploader, it crashes my entire OS.

What uploader are you using? Have you contacted their support?

the problem is also present when uploading conventionally. The file uploads but then my cursor is stuck

Are you using any file transfer add-ons/programs?

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

''GoGojira [[#question-1263100|said]]'' <blockquote> When I try and drag & drop an image from file to an online uploader, it crashes my entire OS. </blockquote> What uploader are you using? Have you contacted their support? <blockquote> the problem is also present when uploading conventionally. The file uploads but then my cursor is stuck </blockquote> Are you using any file transfer add-ons/programs? [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode] {web link} A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Is the problem still there?
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Question owner

Sorry this has taken me a little while to respond to. This is a busy time of year for me - exactly the time I don't want my browser to crash my entire computer!

FredMcD said

What uploader are you using? Have you contacted their support?

At first I uploaded to an online 3D book-cover creator, and I thought it might be their fault. But then I tried to upload things to facebook and the same thing happened. It's not the website, it's Firefox.

Are you using any file transfer add-ons/programs? Start Firefox in Safe Mode {web link} A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Not using a transfer add-on. Tried in safe mode, uploading to facebook. It still crashes Firefox but I can click away and force quit the application. But only in safe mode.

Please help me resolve this. I'm so used to working in firefox that I'm working between firefox and chrome atm. Which is just crazy trying to remember what's open in which browser. Thanks in advance for your help.

Sorry this has taken me a little while to respond to. This is a busy time of year for me - exactly the time I don't want my browser to crash my entire computer! ''FredMcD [[#answer-1232908|said]]'' <blockquote> What uploader are you using? Have you contacted their support? </blockquote> At first I uploaded to an online 3D book-cover creator, and I thought it might be their fault. But then I tried to upload things to facebook and the same thing happened. It's not the website, it's Firefox. <blockquote> Are you using any file transfer add-ons/programs? [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode] {web link} A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Is the problem still there? </blockquote> Not using a transfer add-on. Tried in safe mode, uploading to facebook. It still crashes Firefox but I can click away and force quit the application. But only in safe mode. Please help me resolve this. I'm so used to working in firefox that I'm working between firefox and chrome atm. Which is just crazy trying to remember what's open in which browser. Thanks in advance for your help.
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FredMcD
  • Top 10 Contributor
4225 solutions 58977 answers

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them.

The crash report is several pages of data. We need the report numbers to see the whole report.

Using your mouse, mark the most recent 7 - 10 Submitted crash reports, and copy them. Now go to the reply box and paste them in.

aboutcrashesFx57

For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support

Some of your crash reports weren’t sent to the Mozilla Servers.

In the address bar, type '''about:crashes'''<enter>. '''Note: ''' If any reports do not have '''BP-''' in front of the numbers/letters, click it to submit them. '''The crash report is several pages of data. We ''' '''need the report numbers to see the whole report. ''' Using your mouse, '''mark''' the '''most recent 7 - 10''' '''Submitted''' crash reports, and copy them. Now go to the reply box and paste them in. ;[[Image:aboutcrashesFx57|width=500]] For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support Some of your crash reports weren’t sent to the Mozilla Servers.
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cor-el
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17416 solutions 157361 answers

What is the value of this pref on the about:config page?

  • nglayout.enable_drag_images = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

What is the value of this pref on the <b>about:config</b> page? *nglayout.enable_drag_images = false You can open the <b>about:config</b> page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue. *https://support.mozilla.org/en-US/kb/about-config-editor-firefox
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