Warning: Cannot modify header information

I have a completely new install of dolphin and every time I update something i get this

Warning: Cannot modify header information - headers already sent by (output started at /home/username/public_html/mysite.com/modules/boonex/world_map/classes/BxWmapModule.php:1) in /home/outtarea/public_html/mysite.com/inc/design.inc.php on line 101

or this

Warning: Cannot modify header information - headers already sent by (output started at /home/username/public_html/mysite.com/modules/boonex/world_map/classes/BxWmapModule.php:1) in /home/outtarea/public_html/mysite.com/inc/classes/BxDolInstaller.php on line 299

I've seen the issue on the forum and see a fix here at

http://www.boonex.com/trac/dolphin/ticket/3098

but not sure what to do to fix it and need this problem resolved.  Any help would be appreciated.

Go to /home/username/public_html/mysite.com/modules/boonex/world_map/classes/BxWmapModule.php and remove the empty line from the to top before <?php

there is no white space in the file.  I saw this but it seems to not be the issue

if you go to design.inc.php on line 101 you see reference to the utf issue thats why I think it has to do with that but I do not know how to do the fix.

You just need to open the file in a decent text editor such as notepad++ http://notepad-plus-plus.org/

The editor must be able to properly handle UTF8 file types. Then just re-save the file as UTF8 without the BOM. It's the BOM that's causing the problem.

thank you deano, that worked perfectly.