I am using DLP Discovery 4000 board and my operating system is Windows Vista SP2. When I am going to load image at once, the program crashes. I tried "DLP Discovery 4000 Explorer" and also used the DDC4000l.ocx activex in both LabView and MATLAB. In all cases, I can load block by block; but when I am going to load whole image at the same time (LoadToDMD(17,1) or LoadToDMD(17,0)) the program crashes.