I have a Nokia E60 smartphone, configured for SyncML over HTTP. When I am synchronizing with this device the synchronization of Calendar items fails, and the device responses a 415 error. The other items, such as Contacts and Notes/Tasks, works well. When the device attempts to send an item, the device reports a 'Feature not supported error'. The session starts normally but when the device is about to send the first sync node with calendar items it aborts the sync session with the session.
Has any of you seen this before? What happens, and why doesn't it work? And how can I fix this? Hope you can help me with this.