"Add Calendar" grayed out?

I cannot get Microsoft Exchange to work with my email/calendar at work, so I've set up an IMAP account for work email and it syncs fine.

Now I wanted to set up a calendar on my Droid to sync with my work calendar. When I go into the built-in calendar on the Droid, it shows that I'm running 2 calendars, "Holidays" and my Gmail calendar. If I go into "settings" and click on "Add calendar" the option to "OK" is grayed out.

Why is this? Is there a limit of 2 calendars?

And if anyone knows, is it indeed possible to sync my work calendar into the Droid using IMAP?

Thanks.

 

Well, I figured this out. The only way to add a calendar is through Google Calendar online. So I'll have to figure out how to get my daily work calendar to sync up with that.