A few users from a website I've designed are complaining about Safari 6.0.2 on their Macs (Mountain Lion, mostly) crashing unexpectedly. In a recent case, a user recorded this screencast using no browser extensions, nor any other tabs: it took only a few seconds for Safari to crash (here's the crash report). A quick Google search will reveal loads of similar cases, but none of them seems to provide enough information on the issue, or any potential solution at all. Any idea on what's causing this or how to avoid it? My intention is to prevent Safari 6.0.2 from crashing, as soon as possible.

  • I'm afraid that, as a programming question, it does not belong here.
    – Thecafremo
    Jan 30, 2013 at 14:20
  • Truth is I have no idea if this is a programming question (thus based on my code) or a Apple software (thus based on Safari itself), although I feel this is a bug or rendering issue from Safari. That's why I'm posting this here.
    – João
    Jan 31, 2013 at 8:47
  • It's likely a very annoying Apple bug. I am currently having this on both the Macs I use (MacBook Air Core i7, Mac Mini Core 2 Duo). So it's not simply a performance based bug as I thought. Appreciated hearing it happens also with vanilla Safari (I have ClickToPlugin extension on both of these). Apple should be taking this very seriously, but I don't see that happening... Stop supporting your site with Safari 6.x - the only "cure"?
    – akauppi
    Mar 17, 2013 at 20:13
  • I just removed the CSS blur filter line and it finally worked. I had to go through almost every single file and line until I found the issue.
    – João
    Mar 18, 2013 at 13:14
  • It seems that 6.0.3 may have fixed this issue. The browser still occasionally becomes unresponsive (like it did prior to crashing in 6.0.2) but stays up. Fingers crossed..
    – akauppi
    Mar 28, 2013 at 8:00

2 Answers 2


Open the Terminal app (found in /Applications/Utilties/).
Copy the following as one line (from “curl” through “.pkg”) and paste it into the Terminal window after the “$ ” prompt:

curl -O http://swcdn.apple.com/content/downloads/37/23/041-5058/lr5tynbldi18zcrqo8a8uq88 rnjushqliu/Safari6Lion.pkg

then hit return.

You should see it count down the time. When it stops, look in your home folder (the one with the little house and your user name) for “Safari6Lion.pkg”. Double-click to launch the installer.

Here is an alternative solution that seems to be working for several users, especially those who have somehow managed to install more than one WebKit framework:

  1. Open Finder and navigate to: /System/Library/StagedFrameworks/Safari/ Drag WebKit.framework to the trash

  2. Run software update and install Safari > do not launch safari after it is installed

  3. Restart computer

  4. Launch Safari

Let's try!

  • Thanks for your reply. I got stuck in the Terminal curl command, though. It seems the file was not found: "curl: (6) Could not resolve host: rnjushqliu; nodename nor servname provided, or not known".
    – João
    Feb 12, 2013 at 7:34
  • I also tried the alternative solution, but App Store still shows up the "No updates available" message.
    – João
    Feb 12, 2013 at 7:38

Removing CSS3 blur filters seemed to fix the issue. I just went through almost every single file and line until Safari 6.0.2 stopped crashing. Nevertheless, I still have no idea why a single line of CSS3, -webkit-filter: blur(1px);, was causing these unexpected crashed.

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