I am running my DPF-D72N picture frame off of a Compact Flash card (SanDisk Ultra II 15MB/s 2GB) with about 1900 pictures, sorted into 19 folders of 99 pictures each (pictures are all JPG/JPEG format).  When I run a Slide Show, the picture frame cycles through all the pictures once, and then stops.  The only way I can restart the slide show is to power the frame off and back on, and then it stops again after displaying all the pictures one time.  I used to be able to get the slide show to run continuously, but now for some reason it will only run once.  Help!