Recently installed oC version 8.1 in my Qnap NAS TS251+. It all worked well to begin with.
Then I tried to upgrade with the automatic function. Bad choise.
First I saw a two mile long error list, waited 30 minutes looking at the spinning wheel.
Had no other choise than break the "upgrade".
Now I get Internal server error 500 and nothing works.
The owncloud folder permission have changed from "Admin" to httpusr"
Since I do not have any user with that name I guess the upgrade function did that. I can not change back to admin.
Guess i could reinstall it with a higher version but I put in several days of work to configure with many calendars, shares etc.
Very much grateful for any useful tip