Ok, pour revenir au module 1-Click Upgrade, j'ai enfin réussi à l'installer...
Mais:
Quote
Database backup: 125 table(s) left...
[Ajax / Server Error for action backupDb] textStatus: "error " errorThrown:"Internal Server Error " jqXHR: "
Fatal error: Maximum execution time of 120 seconds exceeded in C:\wamp64\www\lbd16\classes\db\DbPDO.php on line 134
{"nextQuickInfo":[],"nextErrors":["[INTERNAL] C:\\wamp64\\www\\lbd16\\classes\\db\\DbPDO.php line 134 - Maximum execution time of 120 seconds exceeded"],"error":true,"next":"error"}"