encrypt->decode producing blank output

[eluser]Wittner[/eluser]
Hi,

I've used the encryption library with CI before and have not had a problem, however at the moment, something is driving me nuts and I can't figure out why it won't work.

My database has a field which gets encrypted when I post a form. I can view the resulting encryption and it looks fine.

I then do a query, pull out the data and when I try to display the decoded encryption I get a blank. If I don't decode it, I can see the encrypted version of the field. Here is a cut-down version of the code. Can't see what's wrong here and as I say it's working perfectly on another app!

Code:

<?php foreach($query->result() as $item): ?>
...
<input type="text" name="customerName" value="<?=$this->encrypt->decode($item->customerName);?>" />
...
<?php endforeach; ?>

The outputted field value is blank!

Can anyone shed any light on this?