code igniter database (Trying to get property of non-object) on server

On my local machine I access my application using

http://localhost/index.php

on the server i publish it its

http://myserver:8888/alias/index.php

I've updated this in code igniter config and also replicated my local database on the server. Now something screwy is happening on the server when it reaches

$this->db->query($queryStr)->row()->ID;

I tried to manually run the query inside $queryStr and it gives me back data from the command line however when I ran it like above on the server

$this->db->query($queryStr)->row() returns an empty array

I get

Severity: Notice

Message: Trying to get property of non-object

Filename: models/model_mymodel.php

Am I overlooking someth开发者_开发问答ing why is the exact same code not working on the server?

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Check you code to capitalization (case) errors. If your development machine is windows based, it then it does not care about case. You linux server does however.