That would be the folder called install.
Which holds the install/upgrade scripts.
When you look at the zip file it will have A INSTALL FOLDER so upload that also.
Also suggested is to delete that folder when done.
So for me when upgrading .
Make a backup including the database prior.
The directions tell you for upgrading to not overwrite the stated folders because you don't want to overwrite some items.
such as islands or styles you have changed.
But you still want to ftp the install folder to your site.
In that folder is scripts to alter the mysql table if needed.
JUST MAKE SURE IF UPGRADING TO USE THE UPGRADE.PHP FILE NOT THE INSTALL.PHP FILE.
