Update

[eluser]PhilTem[/eluser]
I don't have a clue yet about what is causing the error. However, I was just stumbling over this line when reading through the OP's code

Code:

$this->table = ('languages');

Maybe my PHP knowledge is too limited (even after almost 10 years of working with PHP), but what do the brackets do?

And furthermore: Could the OP please post the 'locale_helper.php' source code? Maybe the error is in there