I’ve followed the instructions to upgrade OpenEMR from 4.0.0 to 4.1.0 on my Linux server. The upgrade appears to complete at every step without error. However, when I login, the Calendar is blank. I’ve made sure that the Apache user can write to the sites directory as well as the openemr/interface/main/calendar/modules/PostCalendar/pntemplates/compiled and the openemr/interface/main/calendar/modules/PostCalendar/pntemplates/cache directories. I also applied the 4.1.0 patch 2.
The calendar was working properly in 4.0.0 and I’ve searched the forums but nothing has helped.
In addition, when I do a fresh install of OpenEMR 4.1.0, the Calendar appears but if I try to switch to week view or month view, the Calendar disappears and will not reappear unless I logout and login again.
It turns out that I just needed to install php-xml. After doing that, everything is working properly and the error disappeared from the log. I’m running OpenEMR on a Centos 5.2 server.