Can't add events via iCal or icloud.com - get 507 error
I have my iPad, iPhone, MacBook Air, and iMac all setup for iCloud using the same Apple ID and they all have the events that were previously stored in just iCaI on the iMac.
However, whenever I go to add an appt (or change existing events) on the MacBook Air, iMac, or icloud.com I get the following error:
"The server responded with an error.
The request for “New Event” in “Myko” in account “iCloud” failed.
The server responded with
“507”
to operation CalDAVWriteEntityQueueableOperation."
I can add them to a single instance of iCal if I "Go Offline" or "Revert to Server" but these events never sync.
Events added via the iPhone stay on the iPhone w/o error, but do also not sync to iCloud or iCloud subscribed machines.
HTTP status code 507 is used to refer to when there is no space available, so I checked my iCloud quota in System Preferences on the MacBook Air, and it shows 5GB of 5GB free.
MacBook Air, Mac OS X (10.7.1)