The icon shows in dock for a fraction of a second, and then disappears. The app never starts, never opens a window, doesn't give an error message. Nothing gets written to flare_log.txt, its created, modified and last opened dates are from yesterday (when I reinstalled 1.14 to see if that still worked.) The only error in it is "ERROR: FileParser: Could not open text file: engine/number_format.txt: No such file or directory!"
I noticed on the website it says the Mac version is for Intel 64 bit. Maybe it isn't supposed to work on Silicon Macs?