lucy24 - 10:14 pm on Nov 15, 2012 (gmt 0)
mod_alias also doesn't recognize RewriteEngine On. That goes with mod_rewrite. So it was wrong before but is about to become right ;)
In any case you don't need the RewriteBase. First because / is the default, and second because the RewriteBase is only used in one situation, and it's a situation that will never occur. (Because you will never allow it to occur. It is within your control.)
What you do need is a rewrite to come after your redirect.* Both will use mod_rewrite and will say RewriteRule, but they will end up in different places.
* Every time I get the capitalization wrong, I promptly receive a reproachful Sticky Mail from You Know Who You Are :P