Millisecond Forums

Hi, I am trying to install **Inquisit Lab 6** on a new Mac, but the installation keeps failing.

**System information:**

* MacBook Air (Apple M4 chip, 2025)
* macOS Sequoia 15.7.4

The installer does not complete successfully.

I was wondering:

1. Is Inquisit Lab 6 currently compatible with Apple Silicon Macs (especially M4)?
2. Is there a known issue with macOS Sequoia (15.7.4) and the installer?

If helpful, I can provide additional details or logs.

Thank you very much for your help!

Best,
Xiaoping

+x

 

Xiaoping - 3/25/2026

Hi, I am trying to install **Inquisit Lab 6** on a new Mac, but the installation keeps failing.

**System information:**

* MacBook Air (Apple M4 chip, 2025)
* macOS Sequoia 15.7.4

The installer does not complete successfully.

I was wondering:

1. Is Inquisit Lab 6 currently compatible with Apple Silicon Macs (especially M4)?
2. Is there a known issue with macOS Sequoia (15.7.4) and the installer?

If helpful, I can provide additional details or logs.

Thank you very much for your help!

Best,
Xiaoping

First, make sure you are installing 6.6.3, not some older version.
https://inquisit.millisecond.com/6/6_6/mac/Inquisit_663.pkg

If after installing, the app displays an invalid installation error saying something like "Inquisit has detected an error with its installation. Please reinstall Inquisit using the installer package," open the Terminal on your Mac, and run



If the installation is still broken after, please post the output from the Terminal window, which should have the specific issues encountered.