USB-UIRT Forum

I got the following HS2 crash message today:

Problem: 8/13/2008 7:07:33 PM
Arithmetic operation resulted in an overflow.
HomeSeer version: 2.2.0.66
Source: merged
Target: Void IREventCallback(System.Object, UsbUirt.ReceivedEventArgs)
Stack trace:
at HSPI_UIRT.HSPI.IREventCallback(Object Sender, ReceivedEventArgs e)
at UsbUirt.Controller.ReceiveCallbackProc(StringBuilder irEventString, IntPtr userState)

I'm running HS2 2.2.0.66 on Windows XP. It looks like a problem with the USBUIRT driver.

Any ideas?