Anyone else having trouble with USB flash drives plugged into your 2016 MBP 15"? I am using Apple's USB-C adapter with a flash drive to try and load some pictures I took for a project, but the flash drive is no appearing on my MBP. I have been using the same adapter plugged into a Logitech mouse receiver with no issues. For some reason, the USB drive is not appearing. I JUST placed the pictures on my drive using the card reader on my iMac (since no SD slot on my MBP), but wanted to use my new MBP to edit the pictures. Anyone else having issues. This is really annoying since I am trying to study for finals at the same time and really don't want to waste time messing with things. 15" 2016 MBP with everything maxed and Mac OS Sierra.