Error with Manage / Files

I have just installed WP and am having trouble when I go to Manage / Files. The files list in the right sidebar does not include all the files. Instead, I see this error:

Warning: file(/home2/www/): failed to open stream: Permission denied in /home2/www/wp-admin/admin-functions.php on line 1463

Warning: implode(): Bad arguments. in /home2/www/wp-admin/admin-functions.php on line 1463

I’ve tried uploading a fresh copy of the admin-functions.php file, but that didn’t fix anything. I tried deactivating plug-ins, but that doesn’t do anything either. Seeing the “permission denied” comment, I even tried chmod-ing to 777, but still nuthin’. Oh–and I also tried switching themes, but still no change.

Any thoughts?