Impossibility to upgrade my licenced version of TFinder

TotalFinder
1

I want to upgrade my Totalfinder, but it seems impossible (error page)
Can you help me please ?

Thx

Julien

2

Info

3

Are you still on Snow Leopard?

If yes, 1.3.4 is the latest version you can use.
If not, please install the latest version directly from the DMG:
http://downloads.binaryage.com/TotalFinder-1.5.2.dmg

4

Ok thx
I try