Date index for Jul 2002

Hi (again :) )

I've created a module, and I keep getting no-sense-making error messages 
when accesing pages related to the module.
This is from class.vacation.php, error messages follows after:

<?php

useattrib("atkdateattribute");
useattrib("atkdummyattribute");

class vacation extends atkNode {

 function vacation() {
   $this->atkNode("vacation");

   $this->add(new atkAttribute("id", 
AF_PRIMARY|AF_HIDE|AF_AUTO_INCREMENT));
   $this->add(new atkDateAttribute("entrydate",AF_HIDE));
   $this->add(new atkDateAttribute("vacationdatestart","F d Y","d F Y", 0, 
0, AF_OBLIGATORY));
   $this->add(new atkDummyAttribute("descr_text", text('until'), 
AF_NO_LABEL|AF_HIDE_LIST));
   $this->add(new atkDateAttribute("vacationdateend","F d Y","d F Y", 0, 0, 
AF_OBLIGATORY));

   $this->add(new atkDummyAttribute("descr_text2", 
text('vacation_warning'), AF_NO_LABEL|AF_HIDE_LIST));

   $this->add(new atkAttribute("userid", AF_HIDE_ADD));


   $this->add(new atkRadioAttribute("status", 
Array(text('undecided'),text('allowed'),text('declined')), Array(0,1,2), 
AF_HIDE_ADD));
   $this->addFilter("vacation.status = 0");

   $this->setTable("vacation");
   $this->setOrder("userid");

 }

 function initial_values()
 {
    global $g_user;

    return array("userid"=>strtolower($g_user["name"]),
                 "entrydate"=>Array("year"=>date("Y"),
                                    "month"=>date("m"),
                                    "day"=>date("d")));
 }
}
?>

Error message (including debug text):

error: [2] Cannot add header information - headers already sent by (output 
started at 
/usr/local/service/tidred/docs/achievo-0.9.0/modules/vacation/class.vacation.inc:136) 
in /usr/local/service/tidred/docs/achievo-0.9.0/atk/class.layout.inc (line 
98)
error: [2] Cannot add header information - headers already sent by (output 
started at 
/usr/local/service/tidred/docs/achievo-0.9.0/modules/vacation/class.vacation.inc:136)
in /usr/local/service/tidred/docs/achievo-0.9.0/atk/class.layout.inc (line 
99)
error: [2] Cannot add header information - headers already sent by (output 
started at 
/usr/local/service/tidred/docs/achievo-0.9.0/modules/vacation/class.vacation.inc:136) 
in /usr/local/service/tidred/docs/achievo-0.9.0/atk/class.layout.inc (line 
100)
error: [2] Cannot add header information - headers already sent by (output 
started at 
/usr/local/service/tidred/docs/achievo-0.9.0/modules/vacation/class.vacation.inc:136) 
in /usr/local/service/tidred/docs/achievo-0.9.0/atk/class.layout.inc (line 
101)
error: [2] Cannot add header information - headers already sent by (output 
started at 
/usr/local/service/tidred/docs/achievo-0.9.0/modules/vacation/class.vacation.inc:136) 
in /usr/local/service/tidred/docs/achievo-0.9.0/atk/class.layout.inc (line 
104)

dbg: [ dot 
authorizationtype: db, scheme: group)
dbg: [+00.00023s] atkSecurityManager() constructing class auth_db
dbg: [+00.04652s] creating sessionManager (namespace: default)
dbg: [+00.04702s] ATKLEVEL : -1
dbg: [+00.04711s] Cleaning stack
dbg: [+00.04723s] New level on session stack
dbg: [+00.04771s] Using session for authentication / user = administrator
dbg: [+00.04826s] atkmysqldb.query(): SELECT theme from employee where 
userid='administrator'
dbg: [+00.05033s] Constructing a new node - vacation.vacation
dbg: [+00.06118s] Action add
dbg: [+00.06361s] Retrieving metadata for vacation
dbg: [+00.06459s] Metadata for vacation complete
dbg: [+00.09762s] Disconnecting from database...
dbg: [+00.09775s] disconnected from the database

All actions etc works, but the error message is still shown on every page. 
Any ideas what I have to do to get rid of the error message?

/Jonas

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