In answer to your questions,:
By "can't bring up the calendar" I mean after selecting "Calendar" from the menu and then entering my account logon, it goes to a blank screen and stays there. It never brings up the calendar for display.
My callings are Web Administrator, Calendar contact (which involves entering calendar events for all Ward organizations), and making the Sunday Bulletin, which also requires my being able to access the Calendar.
My browser is I.E. 9 on a HP desktop running VISTA.
I am able to access the Calendar using someone's new Toshiba laptop running Windows 8 and using my account logon.
Someone else using their own account logon on my PC does not work either.
The thing is, my PC is able to access all other applications that require my account logon and even the Calendar access worked until recently ( I believe it was when calendar 2.5 came out)
Regards.....