Just upgraded to the latest nightly build. I've been using this rule to remove www from my url, the snippet is just after RewriteBase /photos and before all the zp specific rules.

RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC] RewriteRule .* http://%1%{REQUEST_URI} [R=301,L]
Never had problems until now. It's working for www.site.com/photos, but if I want to go to a specific album I can't. My error log says 'Illegal option FollowSymlinksRewriteEngine'

[b]edit[/b]
The solution: turns out it was a problem with the text editor and line breaks not being converted. I modified the file in cPanel's file manager and that fixed it.