MinecraftDev launcher 0.9.1 won't launch game on mac

Client> (Session ID is 82286ea177c7edd64a89683954660ed58097c712)
Client> Client asked for parameter: server
Client> Invalid memory access of location 0x0 rip=0x0
Client>
Game ended with bad state (exit code 139)

The log from the Launcher is attached. When I try to boot any version of Minecraft (release of snapshot), I get the same message regarding the "Invalid memory access". This does not occur when I use the standard Minecraft.app launcher.