PDO error during install and configuration

I don't know how critical this is, but I just received this error when enabling the popup, popupUI, popup block and nodereference modules. The modules were enabled, but the same error occured after viewing the config page and entering save.

PDOException: SQLSTATE[22001]: String data, right truncated: 1406 Data too long for column 'delta' at row 1: INSERT INTO {block} (module, delta, theme, status, weight, region, pages, cache) 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, :db_insert_placeholder_6, :db_insert_placeholder_7); Array ( [:db_insert_placeholder_0] => panels_mini [:db_insert_placeholder_1] => clone_of_material_article_node_mini [:db_insert_placeholder_2] => bartik [:db_insert_placeholder_3] => 0 [:db_insert_placeholder_4] => 0 [:db_insert_placeholder_5] => -1 [:db_insert_placeholder_6] => [:db_insert_placeholder_7] => -1 ) in drupal_write_record() (line 7013 of /home/quickstart/websites/crhub2.dev/includes/common.inc).