Hi

When I try to map participants to a survey I get:
Error: Could not copy attributes to tokens: file /var/www/limesurvey/framework/db/CDbCommand.php, line 358; CDbCommand failed to execute the SQL statement: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'date_created' in 'field list

I select all users in the central database and add them .
But it will add one participant everytime I do it.

Which version?

Version 2.52+160920

Could you create a bug report and include your survey, please? You can assign it to me.