ubiquity add-to-calendar won't work with google corporate account

i am working on a mac with ubiquity + growl and use gmail and google calendar. the google calendar is use is linked to a corporate account domain name (adam@companyname.com). so my problem is that when i want to add an event, i get an error message from growl that says i need to sign into my google calendar, even though i am already signed into google cal with a corporate domain. this would be a great bug to fix!