org-plus-contrib using elpa. After running
org-drill I was getting this error:
org-indent-add-properties: Invalid function: org-with-silent-modifications
This problem wasn't just for
org-drill, I'll get it when I wanted to get my agenda report. So I googled and find at this is an elpa bug, and it can be solved by removing all that elc files.
This problem is gone and agenda report is working well, but I got a new error on 'org-drill'. This is the error:
mapcar: Wrong type argument: listp, \.\.\.