CodeIgniter Memcached Caching

[eluser]sweetD[/eluser]
So I'm using the memcache server of MemCachier. I got a library going but I'm getting;

A PHP Error was encountered

Severity: Notice

Message: Undefined offset: -1001

Filename: libraries/MemcacheSASL.php

Line Number: 137

Not sure if I should just ignore error with an @ symbol infront of the method call. I say this because it is adding correctly to the memcache server, but I get that error posted above.

I tried the MemcacheSASL.php class outside of codeigniter and I get no issues at all using the methods.