MyBB Community Forums

You can delete the tables in your forum database using phpMyAdmin or phpPgAdmin (for PostgreSQL users).

Then, remove the lock file from the install folder (if it's there) and just run the entire installer again. Before doing so, reupload ALL of the MyBB files again and overwrite the copy on the server.

i already uploaded the files again

Have you deleted ALL of the tables inside your forum's database using phpMyAdmin or phpPgAdmin??

You don't need to delete the tables first, you can just delete the lock file and run the installer again.

i deleted lock file reinstalled and everything is working fine now, and can ppl automaticly post youtube vids or do i have to give permissions to do so