Lastly, after my previous 10.13 install, I changed my SSD from Apple's file system to Mac OS extended (journaled) so that I could see High Sierra in the Startup Disk preference pane of my Yosemite drive. After the 10.13.1 update, I had reformat my drive again.
Otherwise, everything is working as expected again. All Adobe CS5 products seem to perform well, but all "Quit unexpectedly - would you like to send report to Apple" upon quit.
iMac (19,1, 3.1 GHz i5, 12.7.4, 40 Gb RAM); MacBook Air (1.8 Ghz, 8 Gb RAM, 10.14.6, 256 Gb SSD) Vodafone router and Devolo Wi-Fi Extender, Canon TS8351 printer/scanner.
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