I have an LG 55LW5300 and LG 47LM6700 . Both are 3D TVs. I have a USB stick with some MP4 movies on it. When I plug the USB into the 6700 all the MP4 files are recognized and play fine. But, when I plug that same stick in the 5300 a few of the movies come up abnormal (red circle with x) and they wont play. I am not sure why the same video file would play fine on one LG TV and not the other one. Any input on what I need to do to fix this problem would be appreciated.