diff -r dcf5381ce8ba -r 2c20563245b2 install/includes/payload.php
--- a/install/includes/payload.php	Sun Jan 25 21:20:14 2009 -0500
+++ b/install/includes/payload.php	Sun Jan 25 21:21:07 2009 -0500
@@ -290,6 +290,9 @@
 # Enable mod_rewrite
 RewriteEngine on
 
+# Required under some aliased setups
+RewriteBase $scriptpath
+
 # Don't rewrite if the user requested a real directory or file
 RewriteCond %{REQUEST_FILENAME} !-f
 RewriteCond %{REQUEST_FILENAME} !-d