I hit a Treo 750 finished Telstra (in Australia) using Vista and WMDC.  For quite a while, I could sync finished bluetooth with my laptop and also patronage to an older XP laptop with the USB cord.  For whatever months today when I enter it shows the unification and starts the sync, then stops the sync and says ‘attention required’, with hold cipher 0×8503001c.  For a patch the errors appeared to be attendant to the com ports and patch my laptop allows for an inbound COM opening from the device, the figure won’t permit me add a COM port.  Neither Bluetooth nor USB connections module work.  I also fresh proven to withdraw and re-create the synch partnership, but it didn’t materialize to withdraw the partnership from my figure and when I proven to, my contact, calendar, etc items were deleted on the device.  Of instruction I today can’t sync the items backwards onto my device.  I’ve been finished these over and over again, finished the manuals and FAQs, with no success.  Please help!
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