AJAX HTTP error. Incorrect integer value: 'entity_id' for column 'delta'

Drupal 7.8 with a lot of modules enabled.
this error appears in the alpha2 and dev version of 10sept.

When hitting submit after selecting the checkbox "Replace title with a field instance", got this error:

An AJAX HTTP error occurred. HTTP Result Code: 500 Debugging information follows. Path: /batch?id=24&op=do StatusText: error ResponseText: PDOException: SQLSTATE[HY000]: General error: 1366 Incorrect integer value: 'entity_id' for column 'delta' at row 1: INSERT INTO {field_data_field_relations} (entity_type, entity_id, revision_id, bundle, delta, language) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5); Array ( [:db_insert_placeholder_0] => node [:db_insert_placeholder_1] => 145 [:db_insert_placeholder_2] => 145 [:db_insert_placeholder_3] => invoice [:db_insert_placeholder_4] => entity_id [:db_insert_placeholder_5] => und ) in field_sql_storage_field_storage_write() (line 424 of /home/myoffice/public_html/modules/field/modules/field_sql_storage/field_sql_storage.module).