“iTunes cannot sync information with the iPhone “Macca’s iPhone” because syncing has been disabled on this computer. Do you want to enable syncing? (y/n)”

Weird, I thought.  I haven’t disabled anything.  I wondered if this was a problem with Office 2008 as last time I sync’d successfully all of my Exchange based calendar items were triplicated..  but that’s another story.

Anyway.  Clicking on Yes (to enable syncing) brought up another error:

“Syncing cannot be enabled on this computer”

So, lo and behold i’ve had out of date calendars and contacts for weeks.  Music, photos and video sync’ing was absolutely fine though.

When it happened again this morning, I tried to open iSync this morning and yet another error:

SyncServices: Can’t connect to the sync server:
NSInvalidRecievePortException: connection went invalid while waiting for a reply ((null))

Looks like something funny going on with the local sync configuration.

Fortunately, the fix was easy.  I renamed the Local sync folder to Local_bak.  iSync then created a new one automatically.  I can now sync without any problems at all.

1. cd ~/Library/Application\ Support/SyncServices/
2. mv Local Local_bak
3. Start iSync.

Related posts:

1. iPhone sync taking a long time? Maybe a "manual" sync will help
2. Wanted : Definitive iCal Entourage sync
3. iPhone launched in UK (in case you didn't know)