Group Calendar on WP 3.02

I have a fresh install of WP 3.02 and BP 1.2.6. I'm trying to run the Group Calendar plugin on this setting. I copied the contents to the plugins folder and activated it but I can't see the "Calendar" menu in the admin area.
I'm not sure if my htaccess file is set up correctly. I managed to create a network, which I'm not even sure I'll be needing one. I just need the calender plugins to allow users to create and join to events.
The installation is in a subfolder. May this be requiring some extra setup?