Well, I have a totally fresh J1.7 without any add-ons - not even language.
Compared to last try, things seems to be running smoother this time around, but this problem persists.
I have filled in everything else; paying methods, a couple of products, manufacturers, shop info... But when I go in to "Taxes & Calculation Rules" and click "New", I get a "403 - Forbidden for non-vendors".
But am I not a vendor? What else am I doing in the backend if I'm not supposed to be there or change things? Or is there any other setting that I have missed?
(Maybe I'll better put this thing in the bug category?)