One thing to remember when scanning glass negatives is that you should not lay the negative directly on the glass of the scanner. The image does not need to be very high off the glass, you can make a holder by cutting a hole just slightly smaller than the negative from thin cardboard. Place the cardboard on the glass, then lay the negative over the cutout. Also, check your setting and make sure you have them set to scan negatives. The negative settings on my Epson V700 reads Film (with film holder) or Film (with area guide).