Orage stopped starting up, doesn't run alarms
I installed the 'new' orage (I'm a long time orage user) about a year ago. Though I didn't notice at first, the alarms do not trigger realtime warnings anymore (I have a simple acoustic alarm trigger before weekly events). Not even the notification gets triggered (until I manually open orage by clicking on the clock). Though I noticed I don't rely on the alarms as much as before, I still miss the feature.
Today though, orage did not start up at all (the clock did not appear on the panel). I ran orage from a terminal and the calendar did appear, and some warnings:
orage-Message: 08:52:35.356: wakeup timer init 0
(orage:6874): orage-WARNING **: 08:52:35.396: str (DESCRIPTION) group (O00.Orage-20230815T181751Z3-0@xxx) in RC file (xxx/.local/share/orage/orage_persistent_alarms.txt) not found, using default ((null))
(orage:6874): orage-WARNING **: 08:52:35.396: str (CMD) group (O00.Orage-20230815T181751Z3-0@xxx) in RC file (xxx/.local/share/orage/orage_persistent_alarms.txt) not found, using default ((null))
(orage:6874): orage-WARNING **: 08:52:35.396: str (DESCRIPTION) group (O00.Orage-20230815T181605Z1-0@xxx) in RC file (xxx/.local/share/orage/orage_persistent_alarms.txt) not found, using default ((null))
(orage:6874): orage-WARNING **: 08:52:35.396: str (CMD) group (O00.Orage-20230815T181605Z1-0@xxx) in RC file (xxx/.local/share/orage/orage_persistent_alarms.txt) not found, using default ((null))
(orage:6874): orage-WARNING **: 08:52:35.396: str (DESCRIPTION) group (O00.Orage-20230815T181507Z0-0@xxx) in RC file (xxx/.local/share/orage/orage_persistent_alarms.txt) not found, using default ((null))
(orage:6874): orage-WARNING **: 08:52:35.396: str (CMD) group (O00.Orage-20230815T181507Z0-0@xxx) in RC file (xxx/.local/share/orage/orage_persistent_alarms.txt) not found, using default ((null))
orage-Message: 08:52:35.452: Created alarm list for main Orage file
orage-Message: 08:52:35.452: Added 21 alarms. Processed 27 events.
orage-Message: 08:52:35.452: Found 54 alarms of which 42 are active. (Searched 64 recurring alarms.)
Orage does not appear in the 'Add new items to panel' list of candidates, but does start from the command line:
This is orage version 4.18.0
Released under the terms of the GNU General Public License.
Compiled against GTK+-3.24.34, using GTK+-3.24.34.
Using libnotify.
Using automatic archiving.
Using libxfce4ui: yes
I'm running on Slackware64 15.0.
What else can I do to debug this?