I’ve used iCal Dupe Deleter it in the past, flawlessly. But this time, I got different results, every time I ran it (from correct results, to erasing everything). When I got correct results, the duplicates returned 20 seconds later, before I could make a backup.
Then, when I was fast enough to make a backup, they returned if I ran a sync with my iPod, or iPad. During the sync, I watched the iCal calendar fill with the duplicates. That is strange, because they just returned. Instead of using MBP as the source, and asking which to use, all the duplicates returned.
My computer had some baggage that needed removing. I did TWO things (not sure if order is important, or if both are important). I found these on Apple Discussion Forums:
http://discussions.apple.com/thread.jspa?messageID=12426956�
I Used This First.
Greetings,
I don't have that experience in my iCal when changing the order of To Do items that are stored in the server based calendar.
Try refreshing iCal:
First make an iCal backup, File > Export > Archive.
Remove the following to the trash and restart your computer:
Home > Library > Caches > ical or com.apple.ical
Home > Library > Calendars > Calendar Cache, Cache, Cache 1, 2, 3, etc. (Do not remove Sync Cache or Theme Cache)
Home > Library > Preferences > com.apple.ical (There may be more than one of these. Remove them all.)
__NOTE: Removing these files will remove any shared (CalDAV) calendars you may have access to. You will have to re-add those calendars to iCal > Preferences > Accounts.
Once the computer is back up and running open iCal and test.
Hope that helps.
THEN,
http://support.apple.com/kb/TS1627
Mac OS X v10.5, v10.6: Resetting the SyncServices folder
I Used This Second.
Last Modified: September 17, 2009
Article: TS1627
Old Article: 306484
Symptoms
You may need to reset the SyncServices folder if you are:
▪ Unable to open iSync in a particular Mac OS X user account.
▪ Unable to click the Sync pane in MobileMe Preferences (in System Preferences) for one Mac OS X user account, but another user on the same computer works as expected.
▪ Unable to reset data on your computer with data from MobileMe for one user, but another user on the same computer works as expected.
▪ Unable to open or use the Sync menu extra in a particular Mac OS X user account.
Important: Manually removing the SyncServices folder is strongly discouraged because this may lead to unexpected data loss.
Products Affected
iSync, Mac OS X 10.6, MobileMe, Mac OS X 10.5
Resolution
Reset the SyncServices folder with these steps
Important: Prior to resetting the SyncServices folder, it is strongly recommended that you back-up any important data that you Sync regularly.
▪ For information about backing up in Mac OS X, see this article.
▪ For information about backing up your MobileMe Sync data, see this article.
▪ For information about manually backing up Sync-related data, see this article.
Mac OS X v10.6 Snow Leopard
1. If you see this Sync menu extra in your menu bar skip to step 2. If you do not have this icon, you need to enable it in System Preferences:
▪ From the Apple () menu choose System Preferences.
▪ Click MobileMe and then click the Sync tab.
▪ Select the option to "Show status in menu bar."
2. While holding down the Option key on your keyboard, click the Sync icon in the menu bar (if you see the Sync menu extra but you are unable to open it, skip to step 5)
3. Choose Reset Sync Services.
4. Click Reset Sync History.
If this does not resolve your issue or if you are unable to open the Sync menu extra, follow these steps:
5. In the Finder, choose Utilities from the Go menu.
6. Open Terminal.
7. In the Terminal window, type or paste the following command on a single line:
/System/Library/Frameworks/SyncServices.framework/Versions/A/Resources/resetsyn c.pl reset
8. Press Return.
9. When the operation is complete quit Terminal.
(The link has instructions for Leopard & Tiger)
Then, not to tempt fate, using iTunes,
My iTunes is set up not to auto sync, as soon as connected:
iTunes/Preferences/Devices/
Check box in front of “Prevent iPods, iPhones, and iPads from syncing automatically.”
Connect device.
Click on device in left column.
Click on the “INFO” tab, shown across the top in iTunes, below the big APPLE window (not the top menu).
Scroll down in iTunes to ADVANCED, put a check mark next to Calendars. (During next sync only, iTunes will replace the information on this iPod (or iPad) with the information on this computer.)
Then, APPLY, which will start the sync. I did this for both the iPod, and my iPad.