wp-admin gone after an update but everything else is fine?

[Maj. Stress]

Originally Posted by Cleo

Upload a fresh copy of WP.

But don't replace
wp-config.php
wp-content

This will preserve your blog plugins, themes, posts and settings.

Does that also work with wp3.0+ in multisite mode?

btw if anyone is looking for a wp backup program (free) I just tried this today and it works great. http://lifeinthegrid.com/labs/duplicator/
I got my copy off of the wp site but you can download it at the above link and have any tech info you might need too.