Sandbox violation when writing to SD card with Mac

[domwakeling]

Using PiBakery on a Mac running Sierra (10.12.16), when trying to write to a card the "Write to SD Card" modal's progress bar fills but never completes.

I'm seeing repeated messages in the logs warning of a sandbox violation, eg:

SandboxViolation: diskutil(18883) System Policy: deny file-ioctl /dev/rdisk0 Violation: System Policy: deny file-ioctl /dev/rdisk0 Process: diskutil [18883] Path: /usr/sbin/diskutil Load Address: 0x109d10000 Identifier: diskutil Version: ??? (???) Code Type: x86_64 (Native) Parent Process: bash [18873] Responsible: /Applications/PiBakery.app/Contents/MacOS/PiBakery [16815] User ID: 0

Not sure how long it's been since I used PiBakery (a few months) or which version of MacOS I was running at the time (probably an earlier version of Sierra) but not had this issue previously.

[davidferguson]

I've definitely had PiBakery running fine on Sierra before. I don't currently have Sierra installed but I'm re-downloading the installer so I should be able to do a few tests in the upcoming days.

[domwakeling]

If it helps - the card was written with a working OS, but without any of the PiBakery 'extras'.