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Recover from File : /// crash loop in OS X Messages System 10.8
This recently published "File : / / /" bug (see this Macworld article for an explanation) is a huge problem and can be seriously exploited to crash Mac apps, especially Messages. If someone sends you an iMessage (from an iOS device to Messages for Mac), Messages will continually crash, rendering it completely useless.


This is a Warning - please DO NOT SEND a message with that content over iMessage. I do not suggest you test this bug. However, despite these warnings, trolling people will still send it to crash their friend's message machines.

Below are three fixes to make iMessage workable again: FIRST (and easiest): Send 30-40 (lines of) iMessages back to the sender. The idea here is to lengthen the iMessage log so that the File : / / / message is not loaded when Messages starts up. You can either send these from an iOS device or from a Share button, such as the one in Safari. Continue trying until you can open iMessage again. Then, delete the conversation with Command+Delete.

SECOND: Remove the "chat.db" message database from ~/Library/Messages. This will remove all Messages conversations.

THIRD: Edit "chat.db" to delete the offending message. You will need to do this with an sqlite editor not subject to the crash (most that I tried do not crash). The message will be found in the "messages" table.

[kirkmc adds: This is, indeed, a serious bug, and it's quite simple to send a denial of service attack to someone using Messages. As the poster said, do not try this juts for fun. You may want to try it in other apps just to see that the crash does, indeed, occur, but at your risk and peril. It's really quite surprising that a bug of this nature got through Apple's QA...]
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Recover from File : /// crash loop in OS X Messages | 6 comments | Create New Account
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Recover from File : /// crash loop in OS X Messages
Authored by: mantrid on Feb 05, '13 09:25:57AM

The way Apple's QA has been lately, I'm actually not surprised.

I shrug it off as just another manifestation of "core rot", as described by a sentiment toward apple that has been gathering steam lately.



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Recover from File : /// crash loop in OS X Messages
Authored by: metiure on Feb 05, '13 11:21:58AM

We all miss Steve.



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Recover from File : /// crash loop in OS X Messages
Authored by: kerwinf on Feb 05, '13 11:54:29AM

If you try this in Notes, it doesn't completely crash, it hangs and then you must force quit the app. Almost the same but slightly different outcome.



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Recover from File : /// crash loop in OS X Messages
Authored by: petersconsult on Feb 07, '13 01:56:58AM

is this limited to Mountain Lion?



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Recover from File : /// crash loop in OS X Messages
Authored by: Andrew J Freyer on Feb 08, '13 09:46:39AM

Yes, the bug is limited to ML.



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Recover from File : /// crash loop in OS X Messages
Authored by: DavidRavenMoon on Mar 03, '13 09:55:06PM

I tried it in TextEdit, and it took it right down. Luckily when I launched it again that line of text was not in the document when it auto opened it again.

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iMac 2.93 GHz Core 2 Duo, 8GB, 1TB, Mac OS X 10.8.2
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