The database is not consistent with the distribution database.
To synchronize your database with the distribution setup, run the following SQL commands:
ALTER TABLE ezxport_available_cclass_attr ADD INDEX fk_contentclassattribute_id ( contentclass_id );
ALTER TABLE ezxport_exports CHANGE COLUMN compression compression int(1) NOT NULL DEFAULT '0';
ALTER TABLE ezxport_exports CHANGE COLUMN export_from_last export_from_last int(1) NOT NULL DEFAULT '0';
ALTER TABLE ezxport_exports CHANGE COLUMN export_hidden_nodes export_hidden_nodes int(1) NOT NULL DEFAULT '0';
ALTER TABLE ezxport_exports CHANGE COLUMN export_schedule export_schedule varchar(100) NOT NULL DEFAULT '0';
ALTER TABLE ezxport_exports CHANGE COLUMN ftp_target ftp_target varchar(200) NOT NULL DEFAULT 'false';
ALTER TABLE ezxport_exports CHANGE COLUMN related_object_handling related_object_handling int(1) NOT NULL DEFAULT '0';
ALTER TABLE ezxport_exports CHANGE COLUMN xslt_file xslt_file varchar(70) DEFAULT '';
ALTER TABLE ezxport_exports ADD INDEX fk_customers ( customer_id );
DROP TABLE ez_ct_change_entry;
DROP TABLE ez_ct_change_log;

...
144   'ezxport_exports' => 
145   array (
146     'name' => 'ezxport_exports',
147     'fields' => 
148     array (
149       'compression' => 
150       array (
151         'length' => 1,
152         'type' => 'int',
153         'not_null' => '1',
154         'default' => '0',
155       ),
...
177       'export_from_last' =>
178       array (
179         'length' => 1,
180         'type' => 'int',
181         'not_null' => '1',
182         'default' => '0',
183       ),
184       'export_hidden_nodes' =>
185       array (
186         'length' => 1,
187         'type' => 'int',
188         'not_null' => '1',
189         'default' => '0',
190       ),
...
198       'export_schedule' =>
199       array (
200         'length' => 100,
201         'type' => 'varchar',
202         'not_null' => '1',
203         'default' => '0',
204       ),
205       'ftp_target' =>
206       array (
207         'length' => 200,
208         'type' => 'varchar',
209         'not_null' => '1',
210         'default' => 'false',
211       ),
...
224       'related_object_handling' =>
225       array (
226         'length' => 1,
227         'type' => 'int',
228         'not_null' => '1',
229         'default' => '0',
230       ),
...
251       'xslt_file' =>
252       array (
253         'length' => 70,
254         'type' => 'varchar',
255         'not_null' => '0',
256         'default' => '',
257       ),
...269       'fk_customers' =>
270       array (
271         'type' => 'non-unique',
272         'fields' =>
273         array (
274           0 => 'customer_id',
275         ),
276       ),
277     ),
278   ),
...

26 CREATE TABLE ezxport_exports (
 27   id int(11) NOT NULL AUTO_INCREMENT,
 28   customer_id int(11) NOT NULL,
 29   `name` varchar(200) NOT NULL,
 30   description varchar(200) NOT NULL, 
 31   sources text NOT NULL,
 32   ftp_target varchar(200) NOT NULL,
 33   slicing_mode CHAR(1) NOT NULL DEFAULT '1',
 34   start_date varchar(15) NOT NULL DEFAULT '0',
 35   end_date varchar(15) NOT NULL DEFAULT '0',
 36   export_schedule varchar(100) NOT NULL,
 37   export_limit int(11) NOT NULL,
 38   export_from_last tinyint(4) NOT NULL DEFAULT '0',
 39   compression tinyint(4) NOT NULL,
 40   related_object_handling tinyint(4) NOT NULL,
 41   xslt_file varchar(70) NOT NULL,
 42   export_hidden_nodes tinyint(4) NOT NULL DEFAULT '0',
 43   PRIMARY KEY (id)
 44 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;