Session variables not working?

[cusimar9]

I've just had an email from a client with such a simple error that the only explanation I can see is that Session Variables are disabled on her system.

Can Session Variables ever be disabled? I knew you could disable cookies... but I didn't think cookies and session variables are the same thing...

[JayM]

If cookies are disabled then Session Variables will not work because they use cookies to set a session ID.