Blogs cannot edit Nelo theme via the custom frontpage or theme options

Hi,

I am working on a new install of WP MU, I upgraded the install to WP v3 last night. I've just installed the Nelo theme. When logged in as the MU super admin I can see all the Nelo theme edit options, custom frontpage and theme options under the Appearance menu. However if I create a user blog and sign in as the user blog admin, select the Nelo theme, I cannot see either of the Nelo theme edit options, neither the custom frontpage or theme options menu items. Also, clicking on any of the front page edit links on the user blog front page brings me to the blog's admin dashboard via the URL http://blog-url/wp-admin/?c=1

Here's what I currently have in mu-plugins

admin-footer-text.php
domain-mapping.php
remove-permalinks-menu-item.php
admin-help-content.php index.php
remove-wp-dashboard-widgets.php
avatar-comments.php
login-image.php
update-notifications.php
avatar-posts.php
widget-avatar.php
avatars.php
remove-browse-happy.php

I can't locate any errors in my site's error log but in my access log I do see a /wp-admin/themes.php?page=custom-homepage.php HTTP/1.1" 302 - which I think is a redirect.

Anybody any ideas as to why Nelo won't work?
Should I scrap the upgrade and start with a full fresh install of WP 3?

Many thanks,
Steve