BirdieSync

Hello.
Here is my configuration:
* MS Windows XP (Samsung NC10)
* Thunderbird 2.0.0.23 (20090812)
* Lightning 0.9
* BirdieSync 1.7.x.x (I dont know how to get exact BirdieSync version (I installed in august 2009)
* Samsung i900 (Omnia / Player Addict) Windows Mobile 6.1

Problem:
1) I synchronize perfectly my device and my computer if I uncheck "Tasks" in the Workstation's option of ActiveSync. (Tasks in Mobile part is checked).
2) If I check Tasks in Workstation part, Thunderbird crashes and Sync is stopped.
3) If I uncheck again, everything works fine, but Tasks are never synchronized.

Thank you if you can help me.

I get the following lines in DesktopProvider.log file in the crash case:
Local 2009-09-05 14:27:21::0625 Card synchronization: True
Local 2009-09-05 14:27:21::0703 Event synchronization: True
Local 2009-09-05 14:27:21::0734 Task synchronization: True
Local 2009-09-05 14:27:21::0765 Mail synchronization: True
Local 2009-09-05 14:27:36::0625 ERROR: Cannot read socket data (GetLastError = 10054)
Local 2009-09-05 14:27:36::0734 ERROR: Impossible to read connection data (GetLastError = 10054)
Local 2009-09-05 14:27:36::0828 ERROR: Cannot read connection data (result = 0x0) (GetLastError = 10054)
Local 2009-09-05 14:27:36::0859 ERROR: Error while receiving getAllObjectExtractsResponse (GetLastError = 10054)
Local 2009-09-05 14:27:36::0890 ERROR: Could not get all object extracts (GetLastError = 0)
Local 2009-09-05 14:27:38::0484 Beginning of synchronization
Local 2009-09-05 14:27:38::0562 ERROR: Cannot write socket data (GetLastError = 10054)
Local 2009-09-05 14:27:38::0609 ERROR: Impossible to write connection data (GetLastError = 10054)
Local 2009-09-05 14:27:38::0625 ERROR: Cannot write connection data (result = 0x0) (GetLastError = 10054)
Local 2009-09-05 14:27:38::0656 ERROR: Cannot write message data (GetLastError = 10054)
Local 2009-09-05 14:27:38::0687 ERROR: Cannot serialize the message before sending (result = 0x0) (GetLastError = 10054)
Local 2009-09-05 14:27:38::0718 ERROR: Error while sending getAllObjectExtractsRequest (GetLastError = 10054)
Local 2009-09-05 14:27:38::0734 ERROR: Could not get all object extracts (GetLastError = 0)
Local 2009-09-05 14:27:38::0796 ERROR: Cannot write socket data (GetLastError = 10054)
Local 2009-09-05 14:27:38::0828 ERROR: Impossible to write connection data (GetLastError = 10054)
Local 2009-09-05 14:27:38::0859 ERROR: Cannot write connection data (result = 0x0) (GetLastError = 10054)
Local 2009-09-05 14:27:38::0890 ERROR: Cannot write message data (GetLastError = 10054)
Local 2009-09-05 14:27:38::0921 ERROR: Cannot serialize the message before sending (result = 0x0) (GetLastError = 10054)
Local 2009-09-05 14:27:38::0953 ERROR: Error while sending getAllObjectExtractsRequest (GetLastError = 10054)
Local 2009-09-05 14:27:38::0984 ERROR: Could not get all object extracts (GetLastError = 0)
Local 2009-09-05 14:27:39::0015 ERROR: Cannot write socket data (GetLastError = 10054)
Local 2009-09-05 14:27:39::0046 ERROR: Impossible to write connection data (GetLastError = 10054)
Local 2009-09-05 14:27:39::0078 ERROR: Cannot write connection data (result = 0x0) (GetLastError = 10054)
Local 2009-09-05 14:27:39::0109 ERROR: Cannot write message data (GetLastError = 10054)
Local 2009-09-05 14:27:39::0125 ERROR: Cannot serialize the message before sending (result = 0x0) (GetLastError = 10054)
Local 2009-09-05 14:27:39::0156 ERROR: Error while sending getAllObjectExtractsRequest (GetLastError = 10054)
Local 2009-09-05 14:27:39::0187 ERROR: Could not get all object extracts (GetLastError = 0)
Local 2009-09-05 14:27:39::0218 End of synchronization

Hello,

In which kind of calendar do you synchronize your tasks ? Local ? Remote ? (if remote which type)
Thanks.