[MacTUG] Fix a few; break a few.

[Dani Roloson]

NetBoot Images are working again under 10.13.6 (broken for 4 & 5).


> Apple has announced that its upcoming macOS Mojave release for Macs will officially be the last to support 32-bit apps


But you now get "not optimized for your Mac. This app needs to be updated by its developer to improve compatibility."


https://support.apple.com/en-ca/HT208436

32-bit app compatibility with macOS High Sierra 10.13.4 - Apple Support<https://support.apple.com/en-ca/HT208436>
support.apple.com
About the transition to 64-bit technology and how it affects 32-bit apps.




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