Question about ST cost when using a staff occult attack

[Tolenkar]

In the new ITL there seems to be a discrepancy about whether a wizard needs to use an ST point in order to make an occult attack with his/her staff. Under the Staff spell on page 18 of the PDF book it states that a wizard's staff is an occult weapon and that: "It costs the wizard no ST to do this; it is not drawing its power from him". However, it says in the printed book version, on the same page, that: "the wizard spends 1 ST and makes a regular die roll to hit".

On page 148 (in both the PDF and printed versions), under Magical Items, it seems to to indicate that there is no ST expenditure to use the staff, stating: "The wizard can strike with it (Wizard's Staff) to do magical damage without casting a spell himself or otherwise expending strength.".

So, my question: does a wizard spend an ST for striking with his staff, or not.

-Tolenkar