ActiveSync 4.5 problem - need expert!

[fuzzynco]

I can't get USB to Active Sync 4.5 (WinXP/SP3, WinMo6.1).
Hotsync can sync the palm on the same port.
It doesn't get far enough to get a real error message,
just an error bubble that it doesn't understand the device?

Hotsync was exited before connecting the phone.
I reinstalled the hardware drivers from the laptop
builder, and reinstalled Active Sync 4.5.

It used to work and now it doesn't?
Am I missing a driver, and if so,
where do I look for it?

Thanks




Alltel Touch Pro OEM ROM.

I attached a screen cap of the bubble message.