[imp] Wierd error messages when listing unsubscribed floders

[sand0566@d.umn.edu]

I am hoping someone can help me with this.  I am getting these error messages
when listing unsubscribed folders.

Warning: Undefined index: attributes in
/var/www/html/horde-2.1/imp-3.1/lib/Tree.php on line 720

Warning: Undefined index: next in /var/www/html/horde-2.1/imp-3.1/lib/Tree.php
on line 684

Warning: Undefined index: level in /var/www/html/horde-2.1/imp-3.1/lib/Tree.php
on line 685

Warning: Undefined index: next in /var/www/html/horde-2.1/imp-3.1/lib/Tree.php
on line 684

Is there a way to define these indexes?