Launching Hyper briefly opens a terminal window and the attached error message. When OK is clicked, both error and terminal window close. Hyper remains running but no windows can be created.
I noticed the error message only occurs when Little Snitch intercepts the call to hyper.is on application launch. When Little Snitch is turned off a window silently opens then immediately closes.

That'll teach you to block Hyper connections! :)
Thank you for your feedback
I tried this and it is working fine for me
If anyone is interested in tackling this (compatability with little snitch) we're open for a PR, if nothing happens in the next month, I'll close this and anyone can request to re-open it if you're interested 馃槃
resoning behind this: seems to not be a huge problem with only one report :)
Text must be too big