Error:

PDOException : SQLSTATE[HY000]: General error: 1366 Incorrect integer value: 'new-1' for column 'fid' at row 1: INSERT INTO {quizzler_multi_options} (fid, delta, value, correct) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3); Array ( [:db_insert_placeholder_0] => new-1 [:db_insert_placeholder_1] => 0 [:db_insert_placeholder_2] => xcbxcvbcxvbcxvb [:db_insert_placeholder_3] => 0 ) dans quizzler_multi_insert_option() (ligne 128 dans /sites/all/modules/quizzler/modules/quizzler_multi/quizzler_multi.module).

My fix:

In /sites/all/modules/quizzler/modules/quizzler_multi/quizzler_multi.module, line 123:
Replace 'fid' => $option->fid,
with 'fid' => str_replace('new-','', $option->fid),