Kitematic(Beta) app download does not launch

Expected behavior

Download Kitematic as instructed when clicking on 'Dashboard…'
Unzipping download
App launches

Actual behavior

Error informing me that,
"The Kitematic(Beta) app is damaged and cannot be opened. You should move it to the trash."
Downloaded from ‘


$ pinata diagnose -u
OS X: version 10.10.5 (build: 14F1021) version v1.11.0-beta7
Running diagnostic tests:
[OK]      docker-cli
[OK]      Moby booted
[OK]      driver.amd64-linux
[OK]      vmnetd
[OK]      osxfs
[OK]      db
[OK]      slirp
[OK]      menubar
[OK]      environment
[OK]      Docker
[OK]      VT-x
Docker logs are being collected into /tmp/20160420-100916.tar.gz
Most specific failure is: No error was detected
Your unique id is: XXXX
Please quote this in all correspondence.

Steps to reproduce the behavior

  1. Downloaded and installed Docker beta for mac today Apr. 20
      Version 1.11.0-beta7 (build: 5830)
  1. Clicked Docker -> Dashboard …
  2. Prompted to download Kitematic(Beta) did so, unzipped, double-clicked.
  3. Error encountered.

I’m also seeing this, except from CloudFront.

“Kitematic (Beta)” is damaged and can’t be opened. You should move it to the Trash.

Google Chrome downloaded this file today at 4:53 PM from

@paulyoung85 Does rebooting your Mac fix the issue? We’ve seen several reports of OSX reporting downloads as corrupted, even through the aren’t and it seems to clear on a reboot.

@davetucker that did fix the issue. Thanks for the help.

I rebooted and still have the problem, is there a hash of the download so I can at least be sure its not corrupted?

changing the setting “allow apps downloaded from:” to the anywhere setting allows it to run. You can change it back once the application has started once

Is this an issue with the application certificate?

I can confirm this. with the default security settings, the mac reports that the app is damaged.
With allow apps downloaded from: anywhere, Kitematic (Beta) opens just fine.