I've tried that and I now get the results page without any filter applied and 3 error lines:
Notice: Undefined variable: WADbSearch1 in /Applications/MAMP/htdocs/communitylinks/probono/admin/Search_Results.php on line 56
Notice: Trying to get property of non-object in /Applications/MAMP/htdocs/communitylinks/WADbSearch/HelperPHP.php on line 381
Notice: Trying to get property of non-object in /Applications/MAMP/htdocs/communitylinks/WADbSearch/HelperPHP.php on line 395
Line 56 is setQueryBuilderSource($query_rsList,$WADbSearch1,false);
381 is if ($QB->ObjectType == "WC") {
395 is else if ($QB->ObjectType == "OB") {