Calendar won't load

Question

Getting a message icloud cannot load calendar

Answer 1

PROBLEMS:
- Syncing would cause the calendar on the Pre to freeze.
- Sometimes a couple appointmtments would show-up fine, but others were not rendering at all.
- Outlook emails and contacts sync with no problems, just the calendar has the problem.   
SOLUTION: 
One day, I noticed a meeting show up on my Pre calendar that I had scheduled almost 5 years ago.  I checked my calendar under Outlook and that old appointment didn't show up.  I did a search for it and it popped up in the search results.  If I opened the appointment, it was showing it as a re-occurring appointment.  The start date was the current date as well (but I remember this thing from 5 years ago).  I did a search in Outlook and discovered about 30 more of these odd appointments (not showing in my daily/weekly calendar view, but only would appear if searching for all active meetings).  
I deleted all of these bogus appointments and almost instantly my Pre was downloading my calendar correctly (has been working 100% since then).