HTTP - header issue with QFC (again)

Hello again, I'm hitting another perplexing issue. I have the same file (diff => no differences) in two separate directories, and referencing different databases. I'm building a report, it runs in a test area but in the user area on the same machine, I get - Warning: Cannot add header information - headers already sent by (output started at /www/slsa/SLSA_Incidents/include/database_config.php:34) in /usr/share/pear/HTML/QuickForm/Action/Jump.php on line 53 database_config.php - has only 33 lines. and I don't use the 'Jump' button at all! How does one track down this? What is the right technique to clearly identify what is causing the issue? What does one look for? I'm really more interested in the technique rather than a specific answer to this problem. This is very confusing. When I hpfm Barry Steele hpfm solutions pty ltd mob: 0413947980 fax: 0299817727 mailto:: barry@hpfm.biz