3) names of files-frames must be as increase-index array: 1.gif, 2.gif, 3.gif ... 9.gif, 10.gif, 11.gif ... 99.gif, 100.gif, 101.gif e.t.c. WITHOUT ADDITIONAL ZEROS! For example, 001.gif - BAD, and 1.gif - GOOD! =) In common, place all these files-frames in one folder. And next select command '0'-'Processing'-'Pack aniGIF'. Next select one of GIF-frames. Next enter name of future animation GIF-file (by default, 'anim.gif'). PaintCAD scans folder for GIF-frames and will show to you list of founded frames.