Quote Originally Posted by zantalluri View Post
We created a new store via our cPanel and used the 1.5 version of Zen cart. then installed our backed up database to it.
That's not a correct upgrade procedure.

You MUST upgrade the database, else your database structure is still based on the old version, and things will not function correctly.

So ... as the message says, upload the zc_install folder and run it, and choose Database Upgrade when prompted. Read the upgrade instructions mentioned previously for more detail.