This can often be solved by enabling PHP output buffering, but I kinda doubt you'll be able to do it on a free, essentially public server since the providers rarely give users that level of access to the system.
Since that Lycos server runs Apache, if you have the ability to edit the .htaccess file, add the line
PHP_FLAG output_buffering on to it. You can also enable output buffering in the php.ini file, but again, I doubt Lycos gives users the ability to do that. (Besides, changing the ini file would require some services on the server to be restarted.)
If you can edit the .htaccess file, give that line a try; otherwise, I'm not sure what to tell you. I had to enable this setting for my site due to the same error and haven't seen it since. Somewhat annoyingly, some pages of my site showed up in Google with that error as the page description since that's what the GoogleBots saw when crawling the site.
This page gives some info about output buffering if you're interested.
PHP Error - Help!
Linear Mode
