WordPress MU

I got the following error when I tried to create a new blog on a newly installed site.

Warning: Cannot modify header information - headers already sent by (output started at C:\Inetpub\Wordpress_MU\wp-content\themes\home\header.php:5) in C:\Inetpub\Wordpress_MU\wp-signup.php on line 341

Any ideas on how to fix this?

same problem: error after trying to upload an image:
Warning: Cannot modify header information - headers already sent by (output started at /home/virtual/sitexx/fst/var/www/html/or/wp-admin/admin-functions.php:1885) in /home/virtual/sitexx/fst/var/www/html/or/wp-includes/functions.php on line 1151

What is your current setup of your server?

Have you done any modifications to the code?

Any plugins installed?

How did this error occur?

How about a URL?

What version of the software are you running?

Have you done a search of the forums already for previous threads on this topic?

Folks, you don't give us a whole lot to go on here.

http://www.or.werkgroepen.net/index.php
http://www.werkgroepen.net/or/index.php

login
admin / 123456
upload a .jpg and the erro occurs..

/
/home/virtual/site66/fst/var/www/html/or/

no plugins
no modifications

nightly wpmu 20060805 first error detected
deleted everything., then installation with
nightly wpmu 20060803

strangë:
NOT logged in the root, as a sub-siteadmin so to say, there is no problem with uploading imagges. To blogs.dir/2/files, no problem

I'm still trying to install and I started getting this while uploading wp-config.php

It happened with an identical file that I had already used, and with everything since.

<?php
// ** MySQL settings ** //
define('DB_NAME', 'mysticwo_wp_5'); // The name of the database
define('DB_USER', 'mysticwo_wp_1'); // Your MySQL username
define('DB_PASSWORD', 'xxxx'); // ...and password
define('DB_HOST', 'localhost'); // 99% chance you won't need to change this value
define('VHOST', 'VHOSTSETTING');
$base = '/';

// double check $base
if( $base == 'BASE' )
die( 'Problem in wp-config.php - $base is set to BASE when it should be the path like "/" or "/blogs/"! Please fix it!' );

// Change the prefix if you want to have multiple blogs in a single database.
$table_prefix = 'wp_'; // example: 'wp_' or 'b2' or 'mylogin_'

// Change this to localize WordPress. A corresponding MO file for the
// chosen language must be installed to wp-includes/languages.
// For example, install de.mo to wp-includes/languages and set WPLANG to 'de'
// to enable German language support.
define ('WPLANG', '');

define( "WP_USE_MULTIPLE_DB", false );

/* Stop editing */

define('ABSPATH', dirname(__FILE__).'/');
require_once(ABSPATH.'wp-settings.php');
?>

Thanks,
Robert

Check for whitespace at the end of the file. That is, there shoudl be nothing - no space, no carriage return, NOTHING at the end of the file, except for the last ?>

The modify headers issue is discussed in the WP codex and we've discussed it a few times as well here in the forums. IIRC whitespace exists with one of the two files that Andrea mentions. (the first one?) Please check both files though.

I have the same error: Which two files are having whitespace? Is there a new download that amends this?

i solved this problem
use this code
<?
//dont use header function in wordpress-wp_signup.php
global $domain;
global $path;
//change urlnew variable as per requirment
$urlnew = "http://".$domain.$path."/wp-admin/admin.php;

echo "<script>";
echo "location = '$urlnew';";
echo "</script>";
echo $urlnew;
?>