Looks familiar. I had this yesterday, (MacBook Air with OS-X Sierra, Pix4D 3.0.13), reinstalled 4 times (tried both versions 2.2.25 and 3.0.13) and always the same. Hope it is solved soonest.
I also have a crashing install. Was running v2.2.25 on new MacBook Air with OS Sierra, for the past week as a trial to convince others that this is fantastic. That was running ok until this mor...