I experience the same with TB 68.10.0 (64-bit) on Linux Mint 20 Cinnamon (64-bit).
Five local calendars are going crazy by reminding me of undeletable reminders, many appointments are lost or cathegories altered & the like.
In the exported *.ics-file I find exactly the same X-LIC-ERROR.
Is there any workaround?
It is in fact impossible to deal with the load of undeletable reminders that count into the dozens meanwhile.
I experience the same with TB 68.10.0 (64-bit) on Linux Mint 20 Cinnamon (64-bit).
Five local calendars are going crazy by reminding me of undeletable reminders, many appointments are lost or cathegories altered & the like.
In the exported *.ics-file I find exactly the same X-LIC-ERROR.
Is there any workaround?
It is in fact impossible to deal with the load of undeletable reminders that count into the dozens meanwhile.