Wednesday 24 August 2011 7:42:54 am

Is is the sorting that doesn't work, or does the whole fetch break?

Looks like you have a comma to much: 'old_item/creation_date'), <-

(Don't know if this i enough to break it but, worth a shot?)

EDIT:

I don't think you can sort on two different classes....?

Wednesday 24 August 2011 9:59:35 am

Instead have you tried using the .sortarray?

'sort_by', $your_node_parent.sort_array

That way the admin can control how items are sorted.