[Plugin: BuddyPress ScholarPress Courseware] fatal error.

Hi,
I am not sure what I am doing wrong. But I am getting consistently this message of; Plugin could not be activated because it triggered a fatal error.
BuddyPress Courseware dependency error: messages has to be activated!

Can you please guide me. I have a project to create demo course ware.

Thanks.

http://wordpress.org/extend/plugins/buddypress-courseware/