MySQL errorno 121

Question

I'm getting this error in MySQL create. I'm doing:

CREATE TABLE `blogReply` (      `Id`      INT(24)      NOT NULL AUTO_INCREMENT COMMENT 'Primary Key of This Table',     `blogId`  INT(24)      NOT NULL COMMENT 'Blog where this reply was posted',     `userId`  INT(24)      NULL COMMENT 'User the blog was posted by',     `name`    VARCHAR(100) NULL DEFAULT 'Unknown' COMMENT 'The Name of the user that the reply was posted by',     `email`   VARCHAR(100) NULL DEFAULT 'Unknown' COMMENT 'The Email of the user that the reply was posted by',     `http`    VARCHAR(300) NULL DEFAULT 'Unknown' COMMENT 'The Webaddress of the user that the reply was posted by',     `message` TEXT         NOT NULL COMMENT 'text of the blog',     `votes`   INT(10)      DEFAULT 0 COMMENT 'Rating of the Blog',     `ratedBy` TEXT         COMMENT 'People who have already Voted on this blog',     `dateReg` BIGINT       NOT NULL COMMENT 'Date the User was Registered',      PRIMARY KEY (`Id`),      CONSTRAINT `FK_userId` FOREIGN KEY(`userId`)         REFERENCES `user` (`Id`)         ON DELETE SET NULL         ON UPDATE CASCADE,      CONSTRAINT `FK_blogId` FOREIGN KEY(`blogId`)         REFERENCES `blog` (`Id`)         ON DELETE CASCADE         ON UPDATE CASCADE  ) ENGINE = InnoDB; 

Any Ideas? The Error States: Can't create table './xxxxxxxx/blogReply.frm' (errno: 121)

Answer 1

Check that all your constraints are really spelled out correctly, also check that there's not any other tables that uses the constraint names FK_userId or FK_blogId