Multisite media broken on subsites

Hello
I have a fresh install of multisite but no matter what I do, I can’t get images to show up in the media library in any subsites (they work in the primary site). I’ve deleted the subsites, uploaded new htaccess fixes from here, cleared cookies and cache, disabled all plugins and themes, everything I can think of. The images are uploading, I can see them on the server, but the sites won’t link to or show them, only the broken image image.

I’m on Bluehost, with Apache version 2.2.26, PHP version 5.2.17, MySQL version 5.5.35-log, Architecture x86_64, if any of that helps.

Also, I had to install fresh multisite about six times before I could get it to not have either the redirect loop error or the 404 error (I deleted the database each time), if that makes any difference. I don’t know enough to know.

Here’s my current htaccess:

# Use PHP5 Single php.ini as default
AddHandler application/x-httpd-php5s .php

# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# uploaded files
RewriteRule ^files/(.+) wp-includes/ms-files.php?file=$1 [L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule . index.php [L]
# END WordPress

AllowOverride AuthConfig Indexes

In the subsite (new media-test site) settings it says “wp-content/blogs.dir/9/files” for the upload path.

Any help would be so wonderful – thank you!!!!