CoreServicesUIAgent would like to access your calendar data

Question

Hi all,
three days ago, I received a strange Mavericks pop-up: "CoreServicesUIAgent would like to access your calendar data".
Then I went to the Security PrefPane, and saw CoreServicesUIAgent clicked.
Strange, so I decided to unclick, although I checked within the CoreServices folder that is was still an App by Apple.
Apparently no change at all.
However, everytime I change an event in iCal on a googlemail calendar account, it will not appear in iCal anymore.
Through Google Calendar webview, I can still see it, but not in iCal anymore.
And I can still see it on my iPhone.
So I disabled the calendar in iCal through the Internet Accounts settings, rebooted, clicked back on "CoreServiceUIAgent" in the Security PrefPane, rebooted, enabled the calendar back in iCal.
No change.
Some questions now:
- where could I find the preference file associated to Security (in order to check whether the "CoreServicesUIAgent" listed in the PrefPane is indeed refering to the Apple App inside the CoreServices folder)?
- why is CoreServiceUIAgent trying to get access to my calendar?
- why did it suddenly appear and not before?
- why is iCal such a pain now with Google Calendars?
Any help would be much appreciated ...

Answer 1

I have been havig trouble with iCal repeatedly prompting me to add a new event on its own.  Recently to try and fix this I deleted my calendars, preferences and caches.  I then picked up my calendars from iCloud.  Within about an hour of running iCal again, I get this prompt to allow CoreServicesUIAgent.app access to my calendar.  I said yes and almost immediately I get one of these unwanted add new event dialogs again.  Ah hah I think.
I have been unable to find out what CoreServicesUIAgent.app does and why it needs access to my calendar, but it does seem to be the source of my unwanted automatic adding of new events issue.  I went into the Security and Privacy Setting and disabled CoreServicesUIAgent.app access to my calendar.  I am now waiting to see if I get any more of those unwanted adding new event prompts.  If I can't detect any loss of functionality, I will just not give CoreServicesUIAgent.app access to my calendar.