Drupal V5.x warning: Cannot add header information

Last modified: August 26, 2009 - 23:21

A very common error while trying to modify the user profile in Drupal 5.x is:

warning: Cannot add header information - headers already sent

This is usually an issue associated with line breaks or text file encoding.

Stop using MS Notepad, Download Context ( http://www.context.cx/ )

Make sure all your files are in DOS (ANSI) not Unicode. (Context -> Convert Test To -> Dos)

Usually the files that are in Unicode are the ones that display in the error message.

/includes/theme.inc

/includes/common.inc

theme-dir/template.php

theme-dir/user_profile.tpl.php

Eliminate all but 1 line break from the end of all of the php (template and user_profile) and inc (/includes/*) files.

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