A blank email address should not overwrite another blank email address when importing a CSV. Otherwise it is impossible to import more than one user in a single file without email addresses (which is actually allowed by the WordPress API).
The fix is pretty simple, replace this line...
if ( ! $user && isset( $userdata['user_email'] ) )
with this...
if ( ! $user && isset( $userdata['user_email'] ) && $userdata['user_email'] )
I hope this can be fixed in a future version. Thanks!
A blank email address should not overwrite another blank email address when importing a CSV. Otherwise it is impossible to import more than one user in a single file without email addresses (which is actually allowed by the WordPress API).
The fix is pretty simple, replace this line...
with this...
I hope this can be fixed in a future version. Thanks!