Foreign key incorrectly formed

[abhi1693]

While installing I get the following issue,

SQLSTATE[HY000]: General error: 1005 Can't create table `u847981389_tux`.`#sql-88f_d5eb590` (errno: 150 "Foreign key constraint is incorrectly formed") (SQL: alter table `bedard_blogtags_post_tag` add constraint bedard_blogtags_post_tag_post_id_foreign foreign key (`post_id`) references `rainlab_blog_posts` (`id`) on delete cascade)