problem with newest CVS

[Ranger Fox]

When I'm trying to use the new CVS version of IMP, I get the following errors

Warning: Undefined index: HTTP_USER_AGENT in ../lib/Browser.php on line 79

Warning: Cannot add header information - headers already sent by (output started
at ../lib/Browser.php:79) in ../lib/Horde.php on line 206

Warning: Cannot add header information - headers already sent by (output started
at ../lib/Browser.php:79) in
/home/rangerfox/public_html/horde.new/imp/index.php on line 26


I am using php4.0.3pl1