I think there is a fundamental problem with the USB driver under Windows 7. Whenever a USB session connection is broken, such as when loading revised firmware to the core, the USB connection can’t be reestablished without a reboot or by disabling then re-enabling the port. This, of course, makes for a pretty painful development cycle. Any suggestions will be gratefully received.
I’m adding this issue here since the related problem (out of control cursor) was marked as solved.