[CalendarServer-users] Trying to get business partner to access account

I have set up my business partner in the accounts.xml file, but when she types in her user name and password and then using http://(my IP address):8080 she is getting a null 0 error. I am really new to this and I can't seem to find the answer. Also, when I enter the address in my firefox it comes right up and asks for user/password, and then lets me in to collection listings for principals/users/Daniel/ When I ask her to do the same on her computer, Firefox says it cannot find the location. I am thinking that I need to make it so that she can find my computer (like I said I am really new to this). Any help would be great. Thanks, Daniel