Okay we solved the problem. Thanks to YOU for sharing your logs, and thanks to my friend who’s handling the DB and server.
The problem is due to permissions on your database. Right now it seems you can’t do the ALTER command.
Check your wordtube database table to see if you have the “counter” field. If not, you must create this field on your own manually with root privileges (ALTER TABLE ADD wp_wordtube MEDIUMINT against (10) NULL DEFAULT’0). In my case, I did that and it worked.
Perhaps a second solution for this problem: add the right ALTER for the user of your database and restart the installation of wordTube. I think it will create the field “counter” automatically.
Good luck.