I just graded a simple picture in AE and after I exported the picture I went to look at the image file and all It was was a black frame. I'ved tried different formats, and I've tried exporting it as a .psd for photoshop but it still won't work. Can somebody help me with this?
You have not provided proper information on your file and settings nor your system. Based on your tags we can assume that you are using MB Colorista and then you may simply exhaust its limits or there is a general issue with your graphics hardwre, since the effect uses GPU acceleration.