I've had issues using pretty much any USB storage solutions myself. Mind you, it doesn't happen very often. It's totally at random. But whether it be my external dock or a thumb drive or even my cell phone. I would transfer files I needed. Then wait a little while to make sure the transfer is complete. Eject, then disconnect the drive. And instantly get hit with a handful of error message popups about how my computer can no longer access those files from the external media.
Anyway, I had something else I wanted to share. Thought it was kind of cool.