SQL errors when having db_prefix

Hi,
this is a superb module!
Unfortunately, with latest version I get SQL errors - it seems to be related to the fact that I have set $db_prefix='drp'.
I get these 2 errors when doing a search:

* user warning: Table 'tca.drp_temp_faceted_search_nids' doesn't exist query: CREATE TEMPORARY TABLE temp_faceted_search_results SELECT DISTINCT(n.nid) AS nid, ((5 * (1 * i.relevance)) + (5 * POW(2, (GREATEST(n.created, n.changed, IFNULL(c.last_comment_timestamp, 0)) - 1193934001) * 6.43e-8)) + (5 * (2.0 - 2.0 / (1.0 + IFNULL(c.comment_count, 0) * 1.000000)))) / 15 AS score FROM drp_node AS n INNER JOIN drp_temp_faceted_search_nids AS i ON n.nid = i.nid LEFT JOIN drp_node_comment_statistics AS c ON n.nid = c.nid INNER JOIN drp_taxonomy_facets_term_node AS taxonomy_facets_term_node_305 ON n.nid = taxonomy_facets_term_node_305.nid WHERE ((n.type NOT IN ('simplenews')) AND (taxonomy_facets_term_node_305.tid = 305)) ORDER BY score DESC in W:\www\drupal\includes\database.mysql.inc on line 172.

* user warning: Table 'tca.temp_faceted_search_results' doesn't exist query: SELECT COUNT(*) FROM temp_faceted_search_results in W:\www\drupal\includes\database.mysql.inc on line 172.