Not sure if this goes here so please advise if otherwise. Hadn't done any printing for quite a while. Have a couple of STL's that I wanted to print up. One needed scaled way up, one needed scaled down to fit on my Photon Mono 6K. That's not the problem, though. I got everything ready, sliced and loaded on to the USB I've been using. But when I went to print, only one of the sliced files appeared on the selections on the printer. They show on the USB when plugged into my laptop. The USB is only about 6% full, so that's not the issue. Any suggestions?