I’ve just installed ip2nation for the first time on EE Version 2.1.3 Build 20101220
I didn’t know what type of SQL File Location it needed - a server path or a URL. I tried various things. One of them worked partially because 2 new exp_ip2nation tables appeared in my database. However several of the things I tried gave me php error messages. What seems to have worked was a full server path including ip2nation.sql at the end.
So Ellis Labs for the benefit of others in the future please use the term full server path when that is what you mean.