Pb when inserting in DB

[eluser]rogierb[/eluser]

Code:

$this->db->insert('activities');

What are you inserting?
I would have expected something like

Code:

$this->db->insert('activities', $insert_array);

If you don't provide the $insert_array CI uses $this->ar_set and I have no idea how this would get filled without setting the array or using the $this->db->set() method.