App Nap and Studio 8.x on Mac

Andrew Stolarz stolarz at
Fri Jul 14 11:52:59 EDT 2017

Hi Reg,

App Nap is a feature added in OS X Mavericks to allow applications to go
into an energy saving mode and sleep when idle. This could be manually
enabled/disabled by selecting an application and pressing Cmnd-I or
File->Get Info to bring up the application Info pane and then toggling the
"Prevent App Nap" checkbox. This checkbox is no longer supported in newer
versions of OS X and Studio 8.

However, the installer for Studio 6.1 and later automatically disables the
use of App Nap for the current user. This is achieved by adding a key
setting to the
/Users/<user>/Library/Preferences/com.omnis.OmnisStudio.plist file. By use
of the following command :

defaults write -app "/.app" NSAppSleepDisabled -bool YES

Which translates for the default Omnis Studio 8.0.1 installation as :

defaults write -app "/Applications/Omnis Studio 8.0.1"
NSAppSleepDisabled -bool YES

Note that if you login as a different user, change the app bundle
identifier (com.omnis.OmnisStudio) or move the bundle to another machine
then this setting will no longer apply and Omnis Studio will go to sleep
when idle.

If you are going to allow other logged in users access to Omnis Studio,
then you can copy this file from the installed user to each of the users
that require access.

If you change the app bundle identifier or have moved the bundle from
another machine or disk then you need to ensure that you also copy or
generate the appropriate ‘com......plist’ file in the users location.

If you want to re-enable App Nap issue the above command in a Terminal
session and provide ‘NO’ as the value:

defaults write -app "/Applications/Omnis Studio 8.0.1"
NSAppSleepDisabled -bool NO

You must restart Omnis Studio before the change can take effect. If you
have Xcode installed then you can also edit the property list file directly
and change the value of the NSAppSleepDisabled key.



On 14 July 2017 at 02:43, Reg Paling <reg.paling at> wrote:

> Hi all,
> I notice that when i Get Info on Omnis Studio 8 or 8.1, that the "Prevent
> App Nap" checkbox doesn't show.
> I have some nice code in Studio 6.x to check and change that setting, and
> I'm wondering if I still need it for Studio 8.x or what...
> Cheers,
> Reg
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