Installing Designer on MacOS Tahoe 26.1

MacOS Tahoe 26.1 may not open .mpkg installer packages directly.
To install Xilica Designer, you can use a trusted third-party tool called Pacifist to extract and install the application manually.

This guide walks you through each step.

1. Download Pacifist from CharlesSoft.

2. Move the Pacifist.app file into your Applications folder.

1. Launch Pacifist.

2. In the menu, go to File → Open Package…

3. Select your XilicaDesigner_4.9.1 3.mpkg file.

You can either install the package directly or extract the app manually:

• Option 1 – Install:

  • Select the main .pkg or .app inside Pacifist.

  • Click Install…, and choose /Applications as the destination.

• Option 2 – Extract:

  • Drag the .app directly from Pacifist into your /Applications folder.

1. Open /Applications/Xilica Designer.app.

2. If macOS blocks the app, go to System Settings → Privacy & Security → Open Anyway.

💡 Note: Xilica Designer is an Intel-based app.
On Apple Silicon Macs, it runs automatically via Rosetta 2.

If additional frameworks or resources are shown in Pacifist, you can drag them into the same /Applications/Xilica Designer.app directory to ensure full functionality.

Using Pacifist is a quick, reliable way to install Xilica Designer when macOS doesn’t open .mpkg packages directly.
Once installed, launch it from Applications, allow macOS permissions if prompted, and you’re ready to go.