User warning db.sequences doesn´t exist

hello,
tried to import users and roles into a fresh drupal 6.12 install from another d6.12 as a start.

get the following errors:

user warning: Table 'xa9163_db3.sequences' doesn't exist query: SELECT id FROM sequences WHERE name = '{users}_uid' in /home/www/test/sites/all/modules/importexportapi/engines/importexportapi_db_put.inc on line 259.
user warning: Table 'xa9163_db3.sequences' doesn't exist query: INSERT INTO sequences (name, id) VALUES ('{users}_uid', 3) in /home/www/test/sites/all/modules/importexportapi/engines/importexportapi_db_put.inc on line 268.
...
...

Your import has been completed. The results of the import can be seen below.
0

obviously the script is looking for a table that doesn´t exist.
even though it tells that zero was imported, all users and roles are there.

only problem: the data after the first umlaut is missing everywhere. see http://drupal.org/node/505380

so i wonder what those messages mean, and if they are related to the other issue or not, and how to get rid of those problems.

attached full errormessage