Jumi Module in Joomla 3.x Session Variables

Question

Interesting question which I hope there is a workaround for --

I am using Joomla 3.0, for which I have installed the Jumi module. When using session variables, I can use them perfectly through my simple login / createaccount scripts but when I try access the session variable from a Jumi script it doesn't work, any suggestions?

i.e. all of the php files in the directory /Joomla can access the session variable. But, the php files in /Joomla/components/com_jumi/files/ cannot access the session variable.

At the top of my "createaccount.php" page I have the following code:

<?php
   if(!isset($_SESSION)){
   // this starts the session 
   session_start();
   }
?> 

When entering the form data into the database, after validation, I have the following line of code to assign the username to the session variable;

// this sets variables in the session 
    $_SESSION['name']= $_POST["user"];

Then I want to be able to access the username datavalue from the homepage, called general.php so i use at the top of the page;

<?php 
 // this starts the session 
 if(!isset($_SESSION))
 {
 session_start(); 
 }
 echo $_SESSION['name'];
?>

I get an undefined index error as the Jumi php files don't seem to recognise the session?