Just upgraded to 2.0-b11, and the problem's still there with WinXP. On first try, it would find the Empeg, but as soon as I clicked on it, it would complain that "the device is no longer connected".

I made it behave the same way I made it behaving with b7 -- opening Options and enabling "network broadcast" and "specific network address" as well.
Eventually, it'll start doing the above again. Disabling the network options tends to fix this, as does enabling serial.

In fact, it seems that whenever USB is being problematic, enabling disabled connectivity options, or disabling enabled ones seems to give Emplode the kick in the butt it needs to work for a span.