Problems retreiving session data on View page

You aren't using sessions properly when retrieving session data.

Code:

<?= ucwords($this->session->userdata[1]); ?>

Should be something like

Code:

<?= ucwords($this->session->userdata('field_you_stored_the_variable_as_in_session'); ?>

Like

Code:

$this->session->userdata('username');

If you don't use it as the userguide states, you will have problems (even if it "appears" to work in some cases)