Error in Loading AT&T Database

Hello Guys.

I am new to face recognition, I am using the AT&T Database. I am facing a problem when I run the script, I recieve an error in the command window,Error is as follow

Error using cd Cannot CD to s1 (Name is nonexistent or not a directory).

Kindly help me to tackle this problem.

Thank You

[Walter Roberson]

Which directory are you starting in?

Is there a subdirectory 's1' under the directory you are starting in?

Where did you put the AT&T database? Is there a subdirectory named 's1' under that directory?