Update:I now made research from bottom to top and found out that all files under /usr/local/share/request-tracker4/plugins were root:staff and 0775 - except RTx-Calendar, which was 0444. I chmoded to 0775 and heureka! Calendar is displayed. What a...
What still does not work: The inline images of calendar aren't displayed. I'll keep at it.
--------- RT 4.4 and RTIR training sessions, and a new workshop day! https://bestpractical.com/training * Los Angeles - January 9-11 2017
