#1581 PunBB errors

[Meliza Amity]

The admin user gets on production pages fow Index -> Show http://www.amitys.com/phpGedView/index.php?mod=punbb&pgvaction=search&search_id=1829794792 etc.
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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 686 of file search.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

In other cases I am ttansferred to the MyGedView page when I carry out an empty search.