My 2Pac has been running well for several months. However, lately it has started to mis-behave.
It will run for 1-2 minutes, and then disappear. It requires me to unplug the USB port and re-plug it back into a different port in order for it to get recognized again.
Plugging into the same port does not cause the 2Pac to be seen, it must be into a different port.