On 28 Nov 2019, at 1:13, Nigel Chapman wrote:
OK, I fixed it by navigating to /Library/Application
Support/TextMate/Ruby/1.8.7/bin in the Finder, clicking on the ruby
executable, and then telling the system it was OK to open it, like you
do with an unsigned app. A bit crummy, but it seems to have worked.
I expect disabling Gatekeeper would have worked too, but I don’t
like to do that.
I don’t know why this happened – it may just be my setup and its
history – but I’m posting this in case anyone else has the same
I *think* it may have been because you moved the file from an old
machine to a new one and somehow it got quarantined in the process and
thus needed to be manually OK’ed.