Wrongful Top Message: This copy of ExpressionEngine is unregistered. Please visit the Software Registration page to enter your license information.

Hi guys,

At the top message bar, I have this error: “This copy of ExpressionEngine is unregistered. Please visit the Software Registration page to enter your license information.”

This happened just after I upgraded the expression engine 2.6.1 to 2.10.1

I then went to the software registration page in the CMS, tried to input the email address and license number according to what I found in my manage purchases page in the ellislab website but the error message at the top is still there.

Does anyone know why this might be or how to fix it?

Thanks in advance.