Getting Error For WP-MU Nelo

Hello,

I am getting this warning message at Custom Homepage Images tab for WP-MU Nelo theme:

Warning: mkdir(/nfs/c01/h02/mnt/32342/domains/example.com/html/wp-content/blogs.dir/1) [function.mkdir]: No such file or directory in /nfs/c01/h02/mnt/32342/domains/example.com/html/wp-content/themes/wpmu-nelo/functions.php on line 1221

How do I get rid of it? Do I need to make directories manually?

Thanks a lot!