Execute this query in your phpAdmin.
PS: If you are downloading the script from version 2.3 is not necessary.

******* Query***********

ALTER TABLE `interactions` CHANGE `type` `type` ENUM('1','2','3','4','5','6') CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '1 Follow, 2 Reposted, 3 favorite, 4 reply, 5 Mentions, 6 Mentions in replies'