CalDAV syncing woth google calendar has just stopped working..

Looking in accounts, the CalDAV account now says its never been synced (i know it has, since i can see some google calander entries, but nothing that ive aded since yesterday).
I cannot syc it even by pressing the Sync button.

After deleting the accoutn and trying to add it again, I get this message:
"You can't use Calendar in this service right now. Please turn on service Calendar on first and try again."

Ive tried creating the account whilst on 3G and wifi

It does work for me, and I have not changed anything in my previous settings. :/

Yeah the strange thing is mine use to work too, until a few days ago :C

But this error message really has me perplexed

Well, sods law both calendars have now started syncing! >.<

I have the same error when I try to sync my google calendar...this is the first time I'm trying to use this service (I used MfE before).
Do we know what is causing the error ?

i am having the same error , any solution ?
(used MfE before)