During the installation I received this warning with other Notices. I realize the notices are just notices but what about the warning? Anything to worry about?

Warning: Cannot modify header information - headers already sent by (output started at /home/edited/public_html/edited/install/class/textsanitizer.php:86) in /home/edited/public_html/edited/install/index.php on line 101

XOOPS 2.0.14 (snapshot)
Cloned Template: Yes
templates generated: Yes

General Server Information:

OS: Linux
Apache: 1.3.36 (UNIX)
PHP: 4.4.2
MySQL: 4.1.20 (std.log)
Register_globals: ON

PC Browser

Widnows XP Home Edition

Quest

I think the warning is just here because of the notices: it seems the installer tries to send a custom header, but as some notices have been printed, it fails to do so.
So, I think you shouldn't worry about it.