@russ Thank you very much!
The old versions didn't work for me (same error) but I could build it from source flawlessly

PS: The .app ends up being ~181.1MB which seems a bit excessive… is there any way to trim it down a bit? maybe some Electron flags?

I'm having this exact problem too. After s̶o̶m̶e̶ a lot of googling and trying stuff, I think it's the same issue as this. Makes sense since I'm using OS X Yosemite 10.10.3. Is there any old archived release I could try? or some instructions to build it myself?

Thanks!
David.