cannot move messages between folders

[boiboi alavaren]

just updated my imp from the cvs now i have this error. Does anyone else have 
the same problem?

Warning: Undefined index: expunge_on_move 
in /home/sites/site1/web/mail/imp/lib/Message.php on line 127

Warning: Cannot add header information - headers already sent by (output 
started at /home/sites/site1/web/mail/imp/lib/Message.php:127) 
in /home/sites/site1/web/mail/imp/message.php on line 316



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