Yep, mod13 is looking good. Arguments are being accepted and both Myst and Riven are firing up (with the 'may be unstable' label - but that's to be expected with any build prior to late-March 2016 when they finalised the Mohawk engine stuff).It's strange, it should at least go to the ScummVM menu from HBC. If you've copied all the files correctly, and the scummvm.ini is ok, I've no idea... Have you tried games other than Myst?
You're right, this one's crashing with a jpeg error(build mistake or scumm fault?).
You can test the previous build : Scummvm-mod13 The myst series was already playable.
Thanks Wiimpathy!!!