[Solved] Problem with register page after renaming vanilla directory and rewriting to subdomain

Hi, wee problem i've encountered. I set up vanilla on my website in a directory called onlyanexcuse.com/vanilla

I changed the directory to /forum and deleted all the .ini files in my cache.

After that, I used .htaccess to redirect and rewrite onlyanexcuse.com/forum to a subdomain - http://forum.onlyanexcuse.com/

Again I deleted the .ini files just in case of conflict. All good until this point.

Now, the problem lies with the Register button. It's linked to http://onlyanexcuse.com/vanilla/entry/register (this will show a Wordpress maintenance page if you click it)

'Apply for membership' is okay but this isn't.

I've set the forum to Basic registration with email confirmation, if that helps.

How can i get http://onlyanexcuse.com/vanilla/entry/register to change to http://forum.onlyanexcuse.com/entry/register?

Site is work in progress in terms of design so please excuse the untidiness!