Today it happened again, trying to start a package in the console and it just failed to start. Digging deeper and looking in /var/log/messages) i saw this error service_initjob_action.c:27 InitJobStart failed, [0xD900 privilege.cpp:60.

The full error log is here:

2017-05-12T10:47:22+02:00 DiskStation [2401242.610681] init: pkgctl-CrashPlan pre-start process (8406) terminated with status 1
2017-05-12T10:47:22+02:00 DiskStation synoscgi_SYNO.Core.Package.Control_1_start[7994]: servicecfg_internal_lib.c:187 Failed to start job [pkgctl-CrashPlan][0xD900 privilege.cpp:60]
2017-05-12T10:47:23+02:00 DiskStation synoscgi_SYNO.Core.Package.Control_1_start[7994]: service_initjob_action.c:27 InitJobStart failed, [0xD900 privilege.cpp:60]
2017-05-12T10:47:23+02:00 DiskStation synoscgi_SYNO.Core.Package.Control_1_start[7994]: pkgstartstop.cpp:273 Failed to start pkgctl-CrashPlan (err=-1) [0xD900 privilege.cpp:60]

Google found me a forum thread where people reported success after a restart and yes, that did work for me.

This situation happened a few times to me and I just realised what was going on: when I already downloaded a DSM update via the console but had not restarted the Synology yet because I was finishing something else.