# Processing sketch as Mac Os Screen Saver error

**URL:** <https://discourse.processing.org/t/processing-sketch-as-mac-os-screen-saver-error/3724>\
**Category:** Processing\
**Created:** [September 21, 2018, 11:54pm UTC](https://discourse.processing.org/t/processing-sketch-as-mac-os-screen-saver-error/3724 "2018-09-21T23:54:40Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![mchelle](https://avatars.discourse-cdn.com/v4/letter/m/7c8e57/32.png) [@mchelle](https://discourse.processing.org/u/mchelle)\
**Post date:** [September 21, 2018, 11:54pm UTC](https://discourse.processing.org/t/processing-sketch-as-mac-os-screen-saver-error/3724/1 "2018-09-21T23:54:40Z")

</div>

I made a sketch and I saved it as an executable file for mac os. I changed the extension from .app to .saver and installed it as a screen saver but my System Preferences is showing me an error when I preview the screen saver.  
“You cannot use the screen saver with this version of macOS. Please contact the vendor to get a newer version of the screen saver.” I’m wondering what my sketch might be missing.

---

<div class="post-metadata">

**Author:** ![Sarah](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/sarah/32/1675_2.png) [@Sarah](https://discourse.processing.org/u/Sarah)\
**Post date:** [September 22, 2018, 1:04am UTC](https://discourse.processing.org/t/processing-sketch-as-mac-os-screen-saver-error/3724/2 "2018-09-22T01:04:13Z")

</div>

You can’t convert a .app into .saver. If you want to use a Processing sketch as your screensaver, you could record it with an external app, then convert it using some apps to an screensaver.

---

<div class="post-metadata">

**Author:** ![mchelle](https://avatars.discourse-cdn.com/v4/letter/m/7c8e57/32.png) [@mchelle](https://discourse.processing.org/u/mchelle)\
**Post date:** [September 22, 2018, 1:31am UTC](https://discourse.processing.org/t/processing-sketch-as-mac-os-screen-saver-error/3724/3 "2018-09-22T01:31:44Z")

</div>

Ok, thank you, I will try doing that. I thought it might work because I thought I saw someone else do something similar on windows.