This may just be something specific to my local instance, but I can't access anything in my images directory unless I delete the rewrite rules in images/.htaccess.
With the rewrite rules in place, any URL within my images directory results in a 500 server error. With the rewrite rules removed, everything works fine.
I'm using Apache 2.0 in MacOS 10.8.5 with MediaWiki 1.23 (current master).
Version: 1.23.0
Severity: major
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=28235