Creating calendars/todo lists does not work from iOS

[fortiko]

In iOS 6, the user can create new calendars and todo lists in the respective applications.

However, doing so via PHP-Push-2 does:

a) NOT result in a new "collection" on the server,
b) causes errors of the kind in PHP-Push-2
PHP Fatal error: Call to a member function GetImporter() on a non-object in /PHP-Push-2/backend/combined/importer.php on line 199
LoopDetection->ProcessLoopDetectionPreviousConnectionFailed(): Command 'FolderCreate' at 18/01/2013 14:43:05 with pid '7039' terminated unexpectedly or is still running.
c) and as a result the synchronisation stops, and events are now longer "pushed" to the device.

How to replicate: create a new calendar or todo list on iOS 6.

[fortiko]

A quick update: a second collection created manually in DAViCal perfectly propagates to the devices and can be used for scheduling and todos. Only the creation of collections on the device itself fails.

[fortiko]

See also my comment here, why we probably (for now) do not want more than one calendar (hint: it disables invites from the phone!): #43 (comment)