Currently Being ModeratedJul 28, 2012 6:12 PM (in response to chineseguy38)
It could be many things. I'd refer to this article.
Currently Being ModeratedJul 28, 2012 6:15 PM (in response to alexbird)
Oh sorry. I don't use iCloud.
Currently Being ModeratedJul 29, 2012 3:15 PM (in response to chineseguy38)
I'm having the same problem. It's as if my iPhone and MacBook Pro now have two separate calendars.
Basically, I have a MacBook Pro (Mountain Lion, 13", late 2011) that I sync via USB with an iPhone 4S (iOS 5.1.1). Before upgrading to Mountain Lion, all of my iCal events would sync flawlessly. But none of the events I've created in iCal (Calendars) since upgrading have synced to the iPhone. Likewise, no new events that I create on the iPhone Calendar will sync to iCal. Also, changes to an existing event (even one created before upgrading to Mountain Lion) don't get synced either.
Everything else seems to be syncing just fine though (music, apps, contacts, etc).
Currently Being ModeratedJul 29, 2012 4:09 PM (in response to chineseguy38)
I am having the same problem. I don't use iCloud, and I don't want to.
Currently Being ModeratedJul 30, 2012 1:59 AM (in response to chineseguy38)
Thanks guys. I switched on iCloud on my iPhone 4s then switch it back off to remove all in calendar. Then select all the sync options back on iTunes, and sync the iPhone. It works!
Currently Being ModeratedAug 2, 2012 11:09 AM (in response to mrchief)
I'm in the same boat and don't get what chineseguy38 found as a solution. I turned iCloud on&off on my 4S but after syncing I found no magic solution. I don't want to use iCloud but do want my iCal to sync properly. Other solutions?
Currently Being ModeratedAug 2, 2012 4:36 PM (in response to chineseguy38)
Hi CSMatMV, once you switch off iCloud on your 4s, choose to remove all calendar. Make sure you tick the options back from iTunes, Sync Calendar, etc. And Sync again. It should works.
Currently Being ModeratedAug 2, 2012 11:53 PM (in response to chineseguy38)
İ did it but i can not solve it.
Currently Being ModeratedAug 6, 2012 3:27 AM (in response to chineseguy38)
I also can't sync iCal with my iPhone 4S after installing Mountain Lion. I do not want to use iCloud and have never switched it on...
Currently Being ModeratedAug 7, 2012 1:58 PM (in response to Little Birdie)
Hi, you might want to check this discussion: https://discussions.apple.com/thread/4164930?start=0&tstart=0
Currently Being ModeratedAug 7, 2012 11:17 PM (in response to RMH)
Thanks for posting the link to that discussion :-)
Unfortunately I still made no headway after deleting the suggested items... I'll have to keep checking the forums for other solutions but if you hear of/see any other relevant information, please let me know!
Currently Being ModeratedSep 13, 2012 1:09 PM (in response to chineseguy38)
This apple answer and turial helped me fix the problem! I had never used the "Terminal" before but you basically just copy and paste the text they suggest into the "Terminal" and it worked...good luck! also, if you can't find the "calendars" folder there's a "terminal" code you can type in which unhides it (sounds like it is hidden by default for some reason). one of the forums had this answer. can't find it now though. http://support.apple.com/kb/TS2481 ~ on another note, this should be an OBVIOUS FIX in the next update of Mountain Lion!
Currently Being ModeratedNov 3, 2012 8:54 PM (in response to chineseguy38)
Thanks also for the post. Just installed Mountain Lion and wondered what had gone wrong with the calender. It works now!
Currently Being ModeratedNov 8, 2012 9:42 AM (in response to chineseguy38)
This is what worked for me