Thanks for the info....PunBB was included with the installation of another program ... phpgedview ... Therefore error must be coming from phpgedview. Sorry to bother you with this.

I am new to PunBB, having just installed it recently. (In general, I am new to all aspects of web site administration).

Anyway, when I add a new group and the choose 'Edit', the following error is generated and I am unable to make changes. Any help would be appreciated.

(I am not a PHP developer, so rather than try to debug I was hoping that someone might see an obvious problem in the error message and be able to provide some assistance).

ERROR 8: Constant PUN_HEADER already defined
0 Error occurred on in function define
1 called from line 210 of file header.php in function require
2 called from line 368 of file admin_groups.php in function include_once
3 called from line 72 of file module.php in function require_once
4 called from line 38 of file index.php