I'm using postgresql with limesurvey 2.00+ Build 130103. When I click "Check data integrity", I get the following output:

Couldn't make backup of the survey table. Please try again. The database reported the following error:
exception 'CDbException' with message 'CDbCommand failed to execute the SQL statement: SQLSTATE[42P01]: Undefined table: 7 FEHLER: Relation »lime_survey« existiert nicht' in /var/www/limesurvey/framework/db/CDbCommand.php:354 Stack trace: #0 /var/www/limesurvey/framework/db/CDbCommand.php(1263): CDbCommand->execute() #1 /var/www/limesurvey/application/controllers/admin/checkintegrity.php(369): CDbCommand->renameTable('{{survey}}', '{{old_survey__2...') #2 /var/www/limesurvey/application/controllers/admin/checkintegrity.php(39): CheckIntegrity->_checkintegrity() #3 [internal function]: CheckIntegrity->index() #4 /var/www/limesurvey/framework/web/actions/CAction.php(107): ReflectionMethod->invokeArgs(Object(CheckIntegrity), Array) #5 /var/www/limesurvey/application/core/Survey_Common_Action.php(100): CAction->runWithParamsInternal(Object(CheckIntegrity), Object(ReflectionMethod), Array) #6 /var/www/limesurvey/framework/web/CController.php(309): Survey_Common_Action->runWithParams(Array) #7 /var/www/limesurvey/framework/web/CController.php(287): CController->runAction(Object(CheckIntegrity)) #8 /var/www/limesurvey/framework/web/CController.php(266): CController->runActionWithFilters(Object(CheckIntegrity), Array) #9 /var/www/limesurvey/application/controllers/AdminController.php(169): CController->run('checkintegrity') #10 /var/www/limesurvey/framework/web/CWebApplication.php(276): AdminController->run('checkintegrity') #11 /var/www/limesurvey/framework/web/CWebApplication.php(135): CWebApplication->runController('admin/checkinte...') #12 /var/www/limesurvey/framework/base/CApplication.php(162): CWebApplication->processRequest() #13 /var/www/limesurvey/index.php(178): CApplication->run() #14 {main}