Help to correctly load packages

[Patrick Bourg]

Hi all,

I followed the installation guides and downloaded the full xAct_1.3.0.tgz bundle to my local  /Users/<user>/Library/Wolfram/Applications/ (MacOS).

But when attempting to load in a Mathematica file xTensor (and xPert), I am met with various problem. For the former, I get a message saying

          "“xperm.mac” can’t be opened because Apple cannot check it for malicious software."

On Mathematica, it then gets stuck on the message

          "Connecting to external mac executable..."

forever. For the latter, I get various error messages (see atatched screenshot).
What am I doing wrong?

I am using Mathematica version 14.2.1.0 on a Apple M1.

[Michael Seifert]

This is an issue related to the increased anti-malware protections that Apple has added to MacOS over the last several years. There are some workarounds discussed in this thread:

https://groups.google.com/g/xact/c/0APu0h7R2Nk/m/GwsvqFN4AgAJ