# 3. Reason CS - Mac OS Installation Permissions

When opening the installer you will be prompted to allow it from the System Settings

[![image.png](https://kb.mpmidi.com/uploads/images/gallery/2025-10/scaled-1680-/Yev6wcNG3yCSZaJl-image.png)](https://kb.mpmidi.com/uploads/images/gallery/2025-10/Yev6wcNG3yCSZaJl-image.png)

click Done and go to System Settings > Privacy and Security and scroll down

[![image.png](https://kb.mpmidi.com/uploads/images/gallery/2025-10/scaled-1680-/32OVCrkDuELp6xJe-image.png)](https://kb.mpmidi.com/uploads/images/gallery/2025-10/32OVCrkDuELp6xJe-image.png)

Click Open Anyway

[![image.png](https://kb.mpmidi.com/uploads/images/gallery/2025-10/scaled-1680-/knUTJnDnqvh3PeMI-image.png)](https://kb.mpmidi.com/uploads/images/gallery/2025-10/knUTJnDnqvh3PeMI-image.png)

Click Open Anyway

Enter your password

[![image.png](https://kb.mpmidi.com/uploads/images/gallery/2025-10/scaled-1680-/wu2Mg2BkLQmbXG7t-image.png)](https://kb.mpmidi.com/uploads/images/gallery/2025-10/wu2Mg2BkLQmbXG7t-image.png)

and you will be prompted to enter your password again so that the installer has the necessary permissions to install the files.

[![image.png](https://kb.mpmidi.com/uploads/images/gallery/2025-10/scaled-1680-/k7C8WmlVPFmneVV4-image.png)](https://kb.mpmidi.com/uploads/images/gallery/2025-10/k7C8WmlVPFmneVV4-image.png)

Click on Quit

Go to Applications folder and run the Reason CS.app

[![image.png](https://kb.mpmidi.com/uploads/images/gallery/2025-10/scaled-1680-/vGZNrYixr08N4Dfr-image.png)](https://kb.mpmidi.com/uploads/images/gallery/2025-10/vGZNrYixr08N4Dfr-image.png)

It may ask for permissions, if it does not then close it and go to the desktop

Close Reason if it is running. Click on the

[![image.png](https://kb.mpmidi.com/uploads/images/gallery/2025-10/scaled-1680-/ajW6lmJrdS8Frf3D-image.png)](https://kb.mpmidi.com/uploads/images/gallery/2025-10/ajW6lmJrdS8Frf3D-image.png)

It will start the control surface app and Reason.

When you quit Reason, it will automatically quite the control surface app, after a couple of seconds.

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Set the permissions on the Remote scripts folder:

open a Terminal and copy/paste the following. It will ask for your password, enter it and hit enter. It should not produce any output.

***<span class="s1">sudo chmod -R 777 ~/Library/Application\\ Support/Propellerhead\\ Software/Remote/</span>***

Continue with the installation guide.