Views alpha pager error message when at user/uid/signups

5.x-1.4, Code, support request, normal, active

I am recieving this error when at i go to any user/uid/signups page:
Alpha Pager enabled without a sort column, please set a sort column, defaulting to numeric pager
I am running CCK/Views/Panels/Current Pagers/Views Alpha Pager.
Could you maybe offer some insight on how to fix this. It only happens at /user/uid/signups
Thanks!