Created attachment 109368 [details]
Start akregator with the option
'KDE Settings' -> 'Application Style' -> 'Widget Style' -> 'Fine Tuning' -> 'Menubar Style' set to 'Title Bar Button'
-> akregator crashes on startup
which explanied the seemingly inexplicable crash on startup for me.
If this is reproducible, please add the backtrace for the crash. For more information, please see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
The backtrace from the referenced Archlinux topic is bug 378513, but yours might be different.
Created attachment 109646 [details]
*** This bug has been marked as a duplicate of bug 378513 ***