I know versions of this problem has been adressed before, but a search revealed none that was exactly the same as min. Found this in the console after trying to load Users & Groups:
29/04/17 11:55:47,233 System Preferences[2419]: ### advanceToConfigPhaseIfNeeded error :Error Domain=NSCocoaErrorDomain Code=4099 "The connection from pid 0 was invalidated from this process." UserInfo={NSDebugDescription=The connection from pid 0 was invalidated from this process.}
29/04/17 11:55:47,235 System Preferences[2419]: ### com.apple.preferences.users willSelect/willBecomeActive exception:NSCocoaErrorDomain
29/04/17 11:55:47,238 com.apple.xpc.launchd[1]: (com.apple.preferences.users.remoteservice[2423]) Service exited due to signal: Illegal instruction: 4
29/04/17 11:55:47,263 com.apple.xpc.launchd[1]: (com.apple.ReportCrash[2424]) Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.ReportCrash
29/04/17 11:55:47,919 ReportCrash[2424]: Saved crash report for com.apple.preferences.users.remoteservice[2423] version 14.0 (14.0) to /Users/peterl/Library/Logs/DiagnosticReports/com.apple.preferences.users.remoteservice_2017-04-29-115547_PLP-MBPro13-2.crash
Ideas about how to rectify this are appreciated, especially as I am doing my taxes right now (last day here in Sweden for small businesses is May 2nd). A major crash resulting in a system that is unusable is not an option right now!
29/04/17 11:55:47,233 System Preferences[2419]: ### advanceToConfigPhaseIfNeeded error :Error Domain=NSCocoaErrorDomain Code=4099 "The connection from pid 0 was invalidated from this process." UserInfo={NSDebugDescription=The connection from pid 0 was invalidated from this process.}
29/04/17 11:55:47,235 System Preferences[2419]: ### com.apple.preferences.users willSelect/willBecomeActive exception:NSCocoaErrorDomain
29/04/17 11:55:47,238 com.apple.xpc.launchd[1]: (com.apple.preferences.users.remoteservice[2423]) Service exited due to signal: Illegal instruction: 4
29/04/17 11:55:47,263 com.apple.xpc.launchd[1]: (com.apple.ReportCrash[2424]) Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.ReportCrash
29/04/17 11:55:47,919 ReportCrash[2424]: Saved crash report for com.apple.preferences.users.remoteservice[2423] version 14.0 (14.0) to /Users/peterl/Library/Logs/DiagnosticReports/com.apple.preferences.users.remoteservice_2017-04-29-115547_PLP-MBPro13-2.crash
Ideas about how to rectify this are appreciated, especially as I am doing my taxes right now (last day here in Sweden for small businesses is May 2nd). A major crash resulting in a system that is unusable is not an option right now!
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