Trouble creating directories and uploading to them

Hi,

I created a form element like this:

  $form['logo'] = array(
    '#type' => 'managed_file',
    '#title' => 'Logo',
    '#upload_location' => 'sites/default/files/team_logos',
  );

for a Content-type I defined in my modulename_node_info function.

I tried uploading a simple gif only to receive the following two errors:
* The file could not be uploaded, because the destination sites/default/files/team_logos is invalid.
* The file in the Logo field was unable to be uploaded.

Now, there are two issues here:

1. My directory was automatically created but the owner was set to 48. This is not the server so the upload would not work as write permissions were not set for Group or Others. (This also happened on install with sites/default/files.)
2. As with sites/default/files, I was unable to change the permissions. So, I deleted the folder and recreated it with full permissions. This also set the owner to the server. However, the same two errors occurred when uploading from the managed_file field.