header modify errors

I am working from home today and getting this error with my copy of my project: *Warning*: Cannot modify header information - headers already sent by (output started at C:\Inetpub\Xampp\htdocs\SNLeader\WOSystem\Welcome.php:31) in *C:\Inetpub\Xampp\htdocs\SNLeader\WOSystem\inc\dbconn_openTest.php* on line *3* *Warning*: Cannot modify header information - headers already sent by (output started at C:\Inetpub\Xampp\htdocs\SNLeader\WOSystem\Welcome.php:31) in *C:\Inetpub\Xampp\htdocs\SNLeader\WOSystem\inc\dbconn_openTest.php* on line *4* Could not connect to the database. I have set my php.ini file output_buffering to ON it was off (read in a past post that will fix this error--but it did not) I also set session.cache_limiter = to nothing it was set to nocache.... Any other things I'm missing? Thanks Terion