Hello, When taking a series of images, I will occasionally get a blank download. Image downloads before & after the blank are normal. Also, my flats are sometimes contaminated with vertical lines along the short border. I'll try to upload two .jpg images as an example of my issue & a text file of the FITS headers. Perhaps someone has seen this problem before and has a solution. Thanks, -Jim Hardware: SBIG STXL / FW8G / AO-X Software: WIN7 SBIG Driver 4.86 Build 1 01-30-15 TheSkyX 10.3.0 Build 8495 Camera Firmware: stxusb.bf2 1.06 stxga.bf2 2.43 stx11000.bft 1.01.105 stx0340.bf2 1.00.04