94
The problem was the search function
xoops_version.php
// Search
$modversion['hasSearch'] = 1;
$modversion['search']['file'] = "include/search.inc.php";
$modversion['search']['func'] = "newbb_search";
for cloneability newbb_search should also be defined in path.php
define("_DIR_NEWBB_SEARCH","newbb_search");
xoops_version.php
// Search
$modversion['hasSearch'] = 1;
$modversion['search']['file'] = "include/search.inc.php";
$modversion['search']['func'] = _DIR_NEWBB_SEARCH;
and ofcourse
search.inc.php
function _DIR_NEWBB_SEARCH($queryarray, $andor, $limit, $offset, $userid){
This removes the blank page, but underneath both forum names, the same topics are listed. No idea why.