encrypt->decode does NOTHING.

[eluser]loathsome[/eluser]
Hello.

I try to decode a string using the encrypt library, but nothing happens. I pasted from the manual as well

$encrypted_string = 'APANtByIGI1BpVXZTJgcsAG8GZl8pdwwa84';

echo $this->encrypt->decode($encrypted_string);

And I get nothing. I have set an encryption key in the config file. What the heck is this?? Encode works just fine.

Thanks.