Hello, I'm french, so sorry for my english.
I just post to help any people who will be locked when updating from OpenX 2.8.10 to Revive Ad Server.
I follow this link : http://www.revive-adserver.com/support/upgrading/
And it's ok for me.
But At the end, I have this message in loop :
Failed to upgrade configuration file.
I change permissions of folder, and it's the same problem.
I update number of version in database with this query :
UPDATE `kzud_LaPubl1cite`.`ox_application_variable` SET `value` = '3.0.5' WHERE `ox_application_variable`.`name` = 'oa_version';
I reload the page, and it's OK, upgrade progress and success
Everything works perfectly.
Have a nice day. Romain