Not ready for db_prefixes? SQL warnings, fatal errors.

I have a large red box of warnings on my "admin/taxonomy_fields" page:

• user warning: Table '[mybase].[myprefix]_' doesn't exist query: DELETE FROM [myprefix]_ WHERE cid = 'taxonomy_fields_term_info' in [myroot]\includes\database.mysql.inc on line 172.
• user warning: Table '[mybase].[myprefix]_taxonomy_fields_ancestors' doesn't exist query: SELECT *,td.tid AS tid FROM [myprefix]_term_data td LEFT JOIN [myprefix]_taxonomy_fields_ancestors tfa ON td.tid=tfa.tid ORDER BY td.tid ASC in [myroot]\includes\database.mysql.inc on line 172.
• user warning: Incorrect table name '[myprefix]_a4s11fieldtypesa7s13nodereferencea3s5labels14NodeReferences6modules13nodereferences10formatters' query: LOCK TABLES [myprefix]_a4s11fieldtypesa7s13nodereferencea3s5labels...[very very long string]...5termsa0 WRITE in [myroot]\includes\database.mysql.inc on line 172.
• user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ':4:{s:11:\"field types\";a:7:{s:13:\"nodereference\";a:3:{s:5:\"label\";s:14:\"N' at line 1 query: UPDATE [myprefix]_a:4:{s:11:\"field types\";a:7:{s:13:\"nodereference\";a:3:{s:5:\"label\";s:14:\"Node Reference\";s:6:\"module\";s:13:\"nodereference\";s:10:\"formatters\";a:2:{s:7:\"default\";a:3:{s:5: ...
  [looks like a serialized array?]
  ...}}s:5:\"terms\";a:0:{}} SET data = '0', created = 1179226078, expire = 0, headers = '' WHERE cid = 'taxonomy_fields_term_info' in [myroot]\includes\database.mysql.inc on line 172.
• user warning: Table '[mybase].[myprefix]_taxonomy_fields' doesn't exist query: SELECT SUBSTRING(nfi.type_name,14) AS tid, tfa.ancestors, tf.universal, td.name, nfi.field_name, nfi.type_name, nfi.label, nfi.widget_type, nfi.weight, nf.type FROM [myprefix]_node_field_instance nfi LEFT JOIN [myprefix]_taxonomy_fields tf ON nfi.field_name=tf.field_name AND SUBSTRING(nfi.type_name,14)=tf.tid LEFT JOIN [myprefix]_taxonomy_fields_ancestors tfa ON SUBSTRING(nfi.type_name,14)=tfa.tid LEFT JOIN [myprefix]_term_data td ON SUBSTRING(nfi.type_name,14)=td.tid LEFT JOIN [myprefix]_node_field nf ON nf.field_name=nfi.field_name WHERE nfi.type_name LIKE 'term_related_%' AND ((tf.delta IS NULL OR tf.delta=0 ) OR (tf.delta=1 AND tf.delta!=0)) ORDER BY td.name, nfi.weight in [myroot]\includes\database.mysql.inc on line 172.

Another tabs on this page shows me "( ! ) Fatal error: Maximum function nesting level of '100' reached, aborting! in [myroot]\includes\module.inc on line 224" and a call stack table.

I'm using local Apache 2.0 + MySQL 5.0.17 + PHP 5.1.1 for Windows and Drupal 5.1

// $Id: content.module,v 1.90.2.39 2007/03/11 23:39:49 yched Exp $
// $Id: taxonomy_fields.module,v 1.1.2.1.2.8 2007/05/03 11:34:55 boneless Exp $