Moving WordPress Failed

I recently tried moving my wordpress blog from http://www.robokira.com to http://blog.robokira.com . I followed all the instructions found here: http://codex.wordpress.org/Moving_WordPress#Moving_WordPress_Within_Your_Site

But it didn’t work. I followed all the directions exactly, but whenever I try to access any page within my blog (the index, individual posts, etc.), I get this error:

Fatal error: Call to undefined function: get_header() in /home/ccsyhqkj/public_html/blog/index.php on line 1

I don’t know what went wrong – can anyone help me? I think my problems started after I changed the WordPress and blog addresses (URIs?) in my General Options in my Dashboard. (Steps 4 & 5 from the Moving WordPress instructions I linked to.) Because after I changed both to http://blog.robokira.com and clicked on update, I got an error page. I don’t know – that whole step seems odd to me: why would I direct my blog to somewhere my files aren’t yet? (The directions said to move the files after changing the URIs – step 10.)

I can still access my Dashboard fine, and it seems like all my posts are still there (but whenever I try to open them, I get that ‘undefined function’ error).

Can anyone help me? I don’t know what’s going wrong. 🙁