[imp] imp installation and integration with imap

[Luís Vitório Cargnini]

hi, i have recently installed imp on my server and i receiving the 
following error :
*Fatal error*: Cannot access parent:: when current class scope has no 
parent in 
*/usr/local/www/horde/imp/lib/Notification/Listener/status.php* on line *26
what could be this ?
my server is an freebsd with horde 3.x and apache 2, thansk for any help.
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