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I'm playing around with Dock and until now I was using killall Dock command to relaunch it.

Now I used killall -KILL Dock and my Dock went down without relaunching itself. I tried restarting my mac but it did not help.

I tried to open also /System/Library/CoreServices/Dock/Contents/MacOS/Dock but all I'm getting is:

2018-08-18 22:05:31.276 Dock[1061:44244] -[__NSCFNumber stringByExpandingTildeInPath]: unrecognized selector sent to instance 0xe5cdf6a4f4b8bcfb
2018-08-18 22:05:31.277 Dock[1061:44244] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber stringByExpandingTildeInPath]: unrecognized selector sent to instance 0xe5cdf6a4f4b8bcfb'

Is there any way I can get my Dock back :(?

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  • 1
    Check to see if the Dock is hiding, press ⌥⌘D (Option-Command-D), Also, in Terminal, run pgrep Dock and if it doesn't return the PID, then run open -a Dock and let us know what happens.
    – user3439894
    Aug 18, 2018 at 20:21
  • The shortcut does not work at all. pgrep Dock returns a PID and open -a Dock does nothing too. Also doing killall Dock returns No matching processes belonging to you were found
    – mdmb
    Aug 18, 2018 at 20:22
  • I've just updated my comment above
    – mdmb
    Aug 18, 2018 at 20:23
  • Anther update. I did killall Finder then open -a Dock and now killall Dock does not return anything at all - so it seems that it should be working, but it is not :( And after doing nothing at all in terminal and trying to do killall Dock again it returns the error :/
    – mdmb
    Aug 18, 2018 at 20:27

2 Answers 2

Reset to default
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So, fortunately I found where the problem was - it was the desktoppicture.db file located in ~/Library/Application Support/Dock/. Probably a corrupted one. Removing it made the macOS replaced it automagically with a new one :)

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    Please accept your answer. This will stop it from coming back to the front page every so often in the future.
    – Harald Hanche-Olsen
    Aug 19, 2018 at 6:51
  • @HaraldHanche-Olsen I will do it as soon as I can - still one day before I can accept it :)
    – mdmb
    Aug 19, 2018 at 9:12
  • Good. I keep forgetting the various time limits around here. 8-)
    – Harald Hanche-Olsen
    Aug 19, 2018 at 9:45
  • 1
    Had the same issue... I wasted two hours fighting that...
    – TheFullResolution
    Oct 7, 2018 at 11:44
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    @DataCrusader I was playing around with this file, learning how it works, along with the Dock-related stuff :)
    – mdmb
    Aug 24, 2020 at 19:57
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I would try ⌥⌘D first. If that doesn't work go to Apple Support Downloads, then search for, download, and run the combo 10.13.6 update (or the latest combo update available for your system version). That's may be the simplest, fastest way to fix something like this.

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