call to member function on non-object

[eluser]Dam1an[/eluser]
Did you try changing the case as I suggested when you actually used it (Maybe I wasn;t clear what I was refering to)

Code:

// Change this
$this->M_user->createUser();
// to this
$this->m_user->createUser();

This is because although PHP is case insensitive on the whole, I'm pretty sure user defined variables are case sensitive, and CI will create the variable in lower case