sub blogs login.php?action=register results in location changed error on main blog wp-signup

I enabled random register page in anti splog and I had to edit a couple of direct links in my theme and change to ust_wpsignup_url() . I checked that wp-login.php?action=register works on the main blog which it does.

on sub blogs though, the link that shows in default sidebar or meta widget will forward pages until it ends up on the wp-signup.php on the main blog which of course shows the location changed error.


everything else is working fine.

(I have wp-supercache running too, do you think it could be affecting how the links and page work?)

edit [sorry for dupe post, I got a page not available so clicked back and submitted again]