WordPress MU

I have the brand new version of WPMU 1.3.3 and I am having difficulty uploading custom header images. I can get to the point where I crop the image but when I click to upload, the page refreshes and nothing is there. Anyone ran into this issue?

What version of K2 are you using? The current nightly builds (I use r632) have excellent support for WPMU. If your using an older version I would recommend upgrading to the latest build to see if this fixes your problem.

Can you send me the url to the download page? thanks

get k2 from http://getk2.com or directly out of svn http://kaytwo.googlecode.com/svn/

i just downloaded the newest version and I still get the same exact problem. I dont get it

For random headers change functions.php
line 11:
define('K2_HEADERS_PATH', TEMPLATEPATH . '/images/headers/');
to
define('K2_HEADERS_PATH', ABSPATH . UPLOADS . 'k2support/headers/');
Tested on 1.0-RC7

After more investigation I found bug in K2 which lead to limit headers in drop down menu to one.
Edit this:
header.php
line 53
$attachment_ids = (array) $wpdb->get_col("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = 'k2-header-image'");
Now images are stored in blog.dir/blog_id/files/yyyy/mm, and data is added to wp_X_postmeta