EDIT: Thanks guys, manually updating the UPM and then team calendars did the trick. You rock 
Hi folks,
I'm currently working through the dragon test, but I seem to be unable to install the team calender trial license. Whenever I go to the plugin page and click on the user installed team calendar item, the spinning "busy" sign comes up but never completes. Same goes for the UPM update which I tried unsuccessfully. The system runs on centos 6 using express installation method and so for, most everything has worked as advertised during the previous steps.
I've also tried restarting confluence, but that hasn't helped, either.
I have the "calendar" entry in confluence user options, but all i see is a "read only" calendar and it tells me to renew my subscription.
TIA for your help, Uwe
Uwe