So you want log((n+1)/r) to determine points for each tournament? If so, take out the TSF= part and put the rest in the points for playing box. Otherwise, if you're looking for it to show the overall score, where you have the season set up, there's a box for overall score. Put it in the Overall Score 1 box (assuming you're only using the one to determine score), but again, leave out the TSF=

Reason you need to leave it out (and why you're getting the error) is that anytime you use a variable in TD that's not predefined, you need to define it before you use it.

Ex:

TSF=((n+1)/r)

((TSF) ^ 2)/2