dataObject multiple links from a column

Hi I cannot manage to link a dataObject with more than one table from a single column, either by getLinks() or by joinAdd(). The only way for me is to manually make the link with $linkedObject = $obj->getLink('col','table','col') and work with the such created object. The syntax of dbname.links.ini for multiple links as described in the doc (car_id.partnum = part_numbers:car_id line in [sales] section) don't works for me (http://pear.php.net/manual/en/html/package.database.db-dataobject.intro-rel ations.html) Here is my code, do I make something wrong ??? Thanks for any help ! ======= dbname.links.ini ========= [marker_category_xref] marker_id = marker:marker_id marker_id.smc = marker_commercial_smc:marker_id ==== end of dbname.links.ini ====== DB_DataObject::DebugLevel(1); $mcx = DB_DataObject::factory('marker_category_xref'); $mcs = DB_DataObject::factory('marker_commercial_smc'); $mcx->category_id = $category_id; $mcs->joinAdd($mcx); $dbg = array(); $mcs->find(); while ($mcs->fetch()) { $dbg[]=$mcs; } Result : __find: QUERY: SELECT * FROM marker_commercial_smc INNER JOIN marker_category_xref ON marker_category_xref.marker_id.smc=marker_commercial_smc.marker_id WHERE marker_category_xref.category_id = '2f8edc5e7dc6a65839672545d7ff3a43' SENT: SELECT * FROM marker_commercial_smc INNER JOIN marker_category_xref ON marker_category_xref.marker_id.smc=marker_commercial_smc.marker_id WHERE marker_category_xref.category_id = '2f8edc5e7dc6a65839672545d7ff3a43' ERROR: DB Error: unknown error __find: CHECK autofetchd __find: DONE