After trying upgrade to 2.1 I saw that I need Mysql 5. So I asked my provider and this night my site was moved to a server with mysql5. When I now try to start I get a lot of errors. The strange thing is, that Piwigo misses some tables. But I checked the Backup and the missed tables where not there before. Does anyone has an idea?
Here a short piece of the error messages:
Warning:  [mysql error 1146] Table 'd00c82b9.piwigo_languages' doesn't exist

SELECT id, name
  FROM piwigo_languages
  ORDER BY name ASC
; in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 642


Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 155



Warning:  [mysql error 1146] Table 'd00c82b9.piwigo_languages' doesn't exist

SELECT id, name
  FROM piwigo_languages
  ORDER BY name ASC
; in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 642


Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 155

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php:641) in /www/htdocs/w005f3d5/bilder/piwigo/include/user.inc.php on line 49

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php:641) in /www/htdocs/w005f3d5/bilder/piwigo/include/user.inc.php on line 49



Warning:  [mysql error 1146] Table 'd00c82b9.piwigo_themes' doesn't exist

SELECT ui.*, uc.*, t.name AS theme_name
  FROM piwigo_user_infos AS ui
    LEFT JOIN piwigo_user_cache AS uc ON ui.user_id = uc.user_id
    LEFT JOIN piwigo_themes AS t ON t.id = ui.theme
  WHERE ui.user_id = '2' in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 642



Warning:  [mysql error 1062] Duplicate entry '2' for key 1

INSERT INTO piwigo_user_infos
  (nb_image_line,nb_line_page,adviser,language,maxwidth,maxheight,expand,show_nb_comments,show_nb_hits,recent_period,template,enabled_high,level,user_id,status,registration_date)
  VALUES('5','3','false','de_DE','1000','600','true','false','true','16','yoga/Sylvia','true','0','2','guest','2010-05-20 11:46:08') in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 642



Warning:  [mysql error 1146] Table 'd00c82b9.piwigo_themes' doesn't exist

SELECT ui.*, uc.*, t.name AS theme_name
  FROM piwigo_user_infos AS ui
    LEFT JOIN piwigo_user_cache AS uc ON ui.user_id = uc.user_id
    LEFT JOIN piwigo_themes AS t ON t.id = ui.theme
  WHERE ui.user_id = '2' in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 642



Warning:  [mysql error 1062] Duplicate entry '2' for key 1

INSERT INTO piwigo_user_infos
  (nb_image_line,nb_line_page,adviser,language,maxwidth,maxheight,expand,show_nb_comments,show_nb_hits,recent_period,template,enabled_high,level,user_id,status,registration_date)
  VALUES('5','3','false','de_DE','1000','600','true','false','true','16','yoga/Sylvia','true','0','2','guest','2010-05-20 11:46:08') in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 642



Warning:  [mysql error 1146] Table 'd00c82b9.piwigo_themes' doesn't exist

SELECT ui.*, uc.*, t.name AS theme_name
  FROM piwigo_user_infos AS ui
    LEFT JOIN piwigo_user_cache AS uc ON ui.user_id = uc.user_id
    LEFT JOIN piwigo_themes AS t ON t.id = ui.theme
  WHERE ui.user_id = '2' in /www/htdocs/w005f3d5/bilder/piwigo/include/dblayer/functions_mysql.inc.php on line 642