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


> On 15 Nov 2019, at 22:36, Alan Bowen <bowenalan03@gmail.com> wrote:
> 
> 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
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________