iSyn2.2 and SE P910i - Synchronization does not work!!!!!

Just found out that synchronization with Addressbook alone works. When syncing to calendar process is interrupted with the above described error message. Help needed!!!

I am also thinking that iSync agent may be the problem. No idea how to figure this out.

Of course. Right now iSync Agent version 1.2(185) is installed. Tried also 2 other agents (AppleSyncAgent-uiqv1r1.sis and AppleSyncAgent-uiqv1ns.sis) I found in /Applications/iSync.app/Contents/PlugIns/ApplePhoneConduit.syncdevice/Contents/ Resources/Agents. Both did not work.

I also wonder whether the issue is related to the P910 firmware. I have R1A30 installed. Does anyone know whether this is the latest update?

Synchronization with calendar items still does not work. In meantime I did the following steps:
1) deleted e2sync and P910 from iSync
2) reinstalled OSX 10.4.6 combo update
3) installed e2sync to iSync
4) synchronization for addresses and calender worked, although some addresses were doubled (This is a bug I have already for some time and is tho my mind NOT related to iSync 2.2
5) deleted double addresses in Entourage, resynced, everything was ok (as checked in Entourage, iCal and Addressbook)
6) installed P910i to iSync
7) synchronization failed, got exactly the same error message as mentioned in my initial post. For more detailled information I add the console protocoll of this particular syncing. Perhaps someone out there can make some sense of it, I unfortunately not.

===== Dienstag, 18. April 2006 11:03 Uhr Europe/Vienna =====
2006-04-18 11:03:40.140 iSync[597] Please use iTunes to synchronize any iPod.
2006-04-18 11:03:55.321 iSync[597] [ISyncDeviceManager registerDevice:] -> adding device with client id: com.apple.iSyncDU.354235002526071
2006-04-18 11:05:57.007 e2Synctool[2361] >>> e2Sync - Initializing Session
2006-04-18 11:05:57.665 e2Synctool[2361] >>> e2Sync - Reading Entourage Database
2006-04-18 11:06:01.879 e2Synctool[2361] >>> e2Sync - Processing Phone Numbers
2006-04-18 11:06:02.013 e2Synctool[2361] >>> e2Sync - Processing Street Addresses
2006-04-18 11:06:02.034 e2Synctool[2361] >>> e2Sync - Processing URLs
2006-04-18 11:06:02.049 e2Synctool[2361] >>> e2Sync - Processing Email Addresses
2006-04-18 11:06:02.171 e2Synctool[2361] >>> e2Sync - Processing IMs
2006-04-18 11:06:02.187 e2Synctool[2361] >>> e2Sync - Processing Contacts Groups
2006-04-18 11:06:45.634 e2Synctool[2361] >>> e2Sync - Processing Event Recurrences
2006-04-18 11:06:45.794 e2Synctool[2361] >>> e2Sync - Processing Reminders
2006-04-18 11:06:46.061 e2Synctool[2361] >>> e2Sync - Reading iSync data
2006-04-18 11:09:38.584 e2Synctool[2361] SyncServices precondition failure in [ISyncConcreteSession clientAcceptedChangesForRecordWithIdentifier:formattedRecord:newRecordIdentifie r:]: you can't change the record identifier from com.apple.syncservices:3C4DFF7C-B21B-424F-A761-71C66F2D3DA3 to CT813: it is already associated with a different record.
2006-04-18 11:09:38.587 e2Synctool[2361] * Please ignore the above * Can't pull record com.apple.syncservices:3C4DFF7C-B21B-424F-A761-71C66F2D3DA3. (Refusing Identifier)
2006-04-18 11:09:38.676 e2Synctool[2361] SyncServices precondition failure in [ISyncConcreteSession clientAcceptedChangesForRecordWithIdentifier:formattedRecord:newRecordIdentifie r:]: you can't change the record identifier from com.apple.syncservices:C7FA9913-7237-4688-B37D-AB0EF1FECD71 to CT812: it is already associated with a different record.
2006-04-18 11:09:38.676 e2Synctool[2361] * Please ignore the above * Can't pull record com.apple.syncservices:C7FA9913-7237-4688-B37D-AB0EF1FECD71. (Refusing Identifier)
2006-04-18 11:09:44.067 e2Synctool[2361] >>> e2Sync - Finishing Sync
2006-04-18 11:09:57.159 iSync[597] SyncServices assertion failure (nil != entityName) in [ISyncConjunctionFilter shouldApplyRecord:withRecordIdentifier:], /SourceCache/SyncServices2/SyncServices2-188/SyncServices/ISyncFilter.m:125 the record com.apple.syncservices:E4C90A69-2F57-41B1-B660-D8353632DDBD should have an entity name, but instead it is {}
11:09:57.159 [iSync:597] ERROR (.sync.SyncConduitManager): Exception catch: [ISyncConjunctionFilter shouldApplyRecord:withRecordIdentifier:]: the record com.apple.syncservices:E4C90A69-2F57-41B1-B660-D8353632DDBD should have an entity name, but instead it is {}
2006-04-18 11:09:59.767 iSync[597] SyncServices assertion failure (nil != entityName) in [ISyncConjunctionFilter shouldApplyRecord:withRecordIdentifier:], /SourceCache/SyncServices2/SyncServices2-188/SyncServices/ISyncFilter.m:125 the record com.apple.syncservices:EB5D5150-72AC-48FA-9659-94274DF83DD1 should have an entity name, but instead it is {}
11:09:59.768 [iSync:597] ERROR (.sync.SYNC): exception in clientCommittedAcceptedChanges: [ISyncConjunctionFilter shouldApplyRecord:withRecordIdentifier:]: the record com.apple.syncservices:EB5D5150-72AC-48FA-9659-94274DF83DD1 should have an entity name, but instead it is {}
2006-04-18 11:10:00.390 iSync[597] we receive the end of our sync plan

Think I have solved my problem. The issue was not related to iSync2.2 but apparently caused by a corrupted file (don´t know which one was the culprit) in user/library/application suppart/SyncServices. I deleted the folder SyncServices and synchronization did work again. I hope this holds true indeed. I suggest everyone who tries this solution to be carefull since Apple suggests in an article on OS X10.4 (http://docs.info.apple.com/article.html?artnum=301920) to stay away from SyncServices.