[gtk-osx-users] Problems opening GTK app (Scala) on macOS 10.14.6

[Carl Caulkett <carl caulkett gmail com>]

* macOS 10.14.6

* XQuartz (X11) 2.7.11

* gtk2 2.24.31 

* Scala Version 2.42 

I am trying to install Scala (not the programming language, but a music scale utility) and I have been following the instructions at http://www.huygens-fokker.org/scala/downloads.html#Mac

The pre-reqs seem to install okay, but when I try to run the Scala software, it gives me the following error...

I’m not used to using mailing list software, so please forgive me if I have done anything wrong. I wasn’t sure if posting images was okay!

Things I have attempted include removing any trace of MacPorts GTK using `sudo port uninstall gtk2`, followed by installing gtk afresh using `brew install gtk`. 

This appeared to complete okay, that is to say, there were no obvious errors.

I’ve also tried installing Fink and running `fink install gtk+2. 

Again this appeared to run okay.

I am aware and troubled by the fact that I am presumably accumulating numerous versions of GTK, none of which appear to have any means of deleting them.

In an ideal work, I would like to delete all traces of GTK from my machine, and then install the correct version and then run Scala!

Does anyone know how I can get Scala to run?