Hello,
According to Google, this problem is caused by a mod_include module in Apache and httpd.conf configuration. I've found this, maybe it will help you:
www.issociate.de/board/post/234537/warnings_in_error_log.html
The last response says:
"In order for
includes to work, you need the following in your httpd.conf file:
The Options directive after the <Directory ....> directive that defines
your Document Root must have Includes or IncludesNoExec
IncludesNoExec is safer as it doesn't allow executables in shtml
files.
You also need :
AddType text/html .shtml"
Here is some documentation I've found:
httpd.apache.org/docs/1.3/mod/mod_include.html
Hope this helps, I can't help you further with this as I am not familiar with the mod_include in Apache.
Best regards,
ARTIO Support Team