[Plugin: Better WP Security] Broken Themes – Nexus – Template is missing

Installing Better WP Security seems to have broken my theme. I can no longer activate it. I tried reverting back to an old htaccess to no avail.

Also I received the email, though the IP address is the address of my HOST

A host, xxx.xxx.xxx.xxx(you can check the host at http://ip-adress.com/ip_tracer/xxx.xxx.xxx.xxx) has been locked out of the WordPress site at http://HOST.com.au until Wednesday, July 25th, 2012 at 4:11:23 am UTC due to too many attempts to open a file that does not exist. You may login to the site to manually release the lock if necessary

Any help is appreciated, thanks

http://ww.wp.xz.cn/extend/plugins/better-wp-security/