problem with NestedSet & PostgreSQL

hola, i have some problems with my DB_NestedSet(version=1.2.4)... my current system has: php5b4 postgresql 7.4.1 i started to configure with NestedSet by creating my tables -> node_table and lock_table, all fine... now i get an instance from DB_NestedSet::factory, seems to be all great, but when i try to add a new rootnode with method 'createRootNode' i get that error-code -> 1077933773.77::Debug:: createRootNode($values, $id = false, $first = false) 1077933773.77::Debug:: testLock() 1077933773.77::Debug:: _lockGC() 1077933773.81::Debug:: _setLock() 1077933773.87::Debug:: _testFatalAbort($errobj, $file, $line) Fatal error: INSERT INTO web_handlanger.bookmark_locks SET lockID='lck-403ff6cdca2a5', lockTable='web_handlanger.bookmark_nodes', lockStamp=1077933773 [nativecode=ERROR: syntax error at or near "SET" at character 43] (-2) in file /usr/local/lib/php/DB/NestedSet.php at line 1977 in /usr/local/lib/php/PEAR.php on line 758 1077933773.89::Debug:: _DB_NestedSet_DB() 1077933773.89::Debug:: _DB_NestedSet() 1077933773.89::Debug:: _releaseLock() 1077933773.91::Debug:: _db_Disconnect() my script looks like: $o_bookmarks = & DB_NestedSet::factory('DB', $o_config->common->dsn, $nestedset_params); $o_bookmarks->debug = TRUE; $o_bookmarks->setAttr($nestedset_attributes); $values = array('name' => 'msieb->bookmarks', 'url' => '', 'description' => '', 'is_bookmark' => 0); $rn1 = $o_bookmarks->createRootNode($values = , $id = FALSE, $first = FALSE); and the params and attributes are set to: <nestedset_params> <bookmark_id>id</bookmark_id> <root_id>rootid</root_id> <l>l</l> <r>r</r> <bookmark_order>norder</bookmark_order> <level>level</level> <name>name</name> <url>url</url> <description>description</description> <is_bookmark>is_bookmark</is_bookmark> </nestedset_params> <nestedset_attributes> <node_table>web_handlanger.bookmark_nodes</node_table> <lock_table>web_handlanger.bookmark_locks</lock_table> </nestedset_attributes> so, my english is pretty stifling, but i hope the scope was set to the right points... the sql-statement seems to be very interesting, i never saw an INSERT statement like 'INSERT INTO <table> SET key=val'... the postgresql documentation told me nothing more about that notation than my sql-experiance. i hope too could solve this problem with your help... maybe. for alle notes and listeners: thank you!! so, greetings and bye... markus