getting checksum errors when files are uploaded to the Arduino with usb connected to Pi 2. Also have another very odd problem. With VirtualHere driver pack installed my USB's see new device plugged into them (on the client) but they show up as unknown and I have to manually install them. once I uninstall the driver packs everything is fine, plug in a device and it installs drivers accordingly. and when the Arduino is plugged into the Raspberry Pi the device shows something like 0ff4 or something to that effect. Raspberry Pi is connected wired. as well as the client computer, through a TPLink 24 Port Switch. I have not tried on another computer at the time I was not sure if i would be able to get the drivers working properly. but I figured i would ask to see if anyone knows or has had a similar problem.