Hi Alan,
I don't know on which MacOS you are, but I am on MacOS 10.14.6, and never had such an issue with my installations of ConTeXt. I looked into my options of the so-called Gatekeeper on my machine, and remembered that I have done the following:
go to Apple menu -> Preferences -> Security & Privacy
on the Security & Privacy, choose the tab General
there choose, towards the bottom of that pane, under « Allow apps downloaded from: » choose the radio button App Store and identified developpers.
Once this is done in principle you should be able to run the scripts install.sh or first-setup.sh and then run lmtx or context.
Best regards: OK
Though I was able to download the latest ConTeXt beta without any problems, my attempt to update my ConText-LMTX installation was blocked. The error message was
“mtxrun” cannot be opened because the developer cannot be verified
macOS cannot verify that this app is free from malware.
Safari downloaded this file on April 29, 2019.
I am not sure why this is happening and wonder if it would OK to copy mxtrun from my ConTeXt installation and replace the version in my ConTeXt-LMTX installation with it.
Alan
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