2. Device type = Treo 680
3. Any error messages on your device:
Synchronization log
7/22/07 - 7:50 pm
-Slow Sync for Calendar
-Failed: Invalid Data (20007)
-Device: add 0, upd 0, del 0 items
-Server: add 0, upd 687, del 0 items
-Errors: device 0, server 0
-Received: 0 / Sent 423465 bytes
Invalid Data messages usually mean that the data received from the
server is not a syntactically valid SyncML message (containing invalid
tags or WBXML encoding).
This usually indicates some sort of network problem that causes data
corruption on the way.
A frequent cause are mobile operators who feed data traffic from
mobile devices through equipment that tries to optimise bandwidth.
This is fine for web browsing, but often interferes with SyncML. To
find out, try to synchronise through the cradle (you will need to
install and use Softick PPP in order to do this), or insert another
mobile operator's SIM card to see if it makes a difference.
I have also enabled detailed logging on your account so we can see if
there are any specific problems when you next synchronise.