"Error: Property [ORGANIZER] must be specified once" when exporting offline calendars from Etar

[tomgagdotnet]

Hello, as from title, I started receiving this message when exporting anyone of my offline calendars to file. This is new for me, last time I checked it was roughly 2 months ago.

[ford--prefect]

I have the same issue, but the property missing here is [UID].

EDIT: Solved with an older version, v54 worked for me (on an ancient Android, though). Old APK found at izzysoft.de

[rimugu]

This just happened to me, set Permissive export to Skip extensive validation of the output file, that got rid of the error for me. (I also set Allow different line endings to Enforce RFC compliant line wrapping and Permissive parsing to Enforce RFC compliant input, but that was for a different reason).