Thanks David! I had a feeling this was it but I couldn’t remember the fix… I wouldn’t mind so much if it failed before spending an age making petsc! All sorted now :) J On 23 Jan 2020, at 16:00, Ham, David A <david.ham@imperial.ac.uk<mailto:david.ham@imperial.ac.uk>> wrote: Try brew uninstall open-mpi and then install again. This is a really tiresome mpi issue we are having trouble killing off. From: <firedrake-bounces@imperial.ac.uk<mailto:firedrake-bounces@imperial.ac.uk>> on behalf of "Shipton, Jemma" <J.Shipton@exeter.ac.uk<mailto:J.Shipton@exeter.ac.uk>> Date: Thursday, 23 January 2020 at 15:50 To: firedrake <firedrake@imperial.ac.uk<mailto:firedrake@imperial.ac.uk>> Subject: [firedrake] Mac installation issue Hi All, I’m having trouble installing Firedrake on my Mac. I’ve attached the install log - any suggestions? Thanks! Jemma _______________________________________________ firedrake mailing list firedrake@imperial.ac.uk<mailto:firedrake@imperial.ac.uk> https://mailman.ic.ac.uk/mailman/listinfo/firedrake<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmailman.ic.ac.uk%2Fmailman%2Flistinfo%2Ffiredrake&data=02%7C01%7CJ.Shipton%40exeter.ac.uk%7C8ec4903af9e54fbe209608d7a01d5e33%7C912a5d77fb984eeeaf321334d8f04a53%7C0%7C0%7C637153920299097626&sdata=Hk92Ky3Jl9LGVzsS8s4gJ5b0aHGiUqdMHoORPOC20vg%3D&reserved=0>