I recently got the Flashforge Foto 8.9 printer. I have chitubox 1.9 and selected the correct printer. I know it's supported by 1.9. As a matter of fact I was able to slice and print some exposure test files and attempt on a bust. But then after going to a different USB drive it stopped reading the .fdg file that it slices it to. Oddly even going back to the original USB it won't print those either! I can't find the answer or help anywhere. Does the firmware need to be reflashed? I can't find my printer firmware anywhere. Is there a bug in chitubox or something? I don't understand why it worked before now it is as if it doesn't understand the files. There isn't even a preview picture anymore. If anyone can please help get this sorted I would be very grateful.