It is my understanding that the new board no longer resizes pictures like the old one and has maximum file size of 1.91MB for jpg files. I may be mistaken, but if your file size exceeds 1.91MB the picture will simply not load. This may be the problem you are experiencing.
To check your file size for pictures on your computer you can try right clicking the file. You should get a drop down window and among your choices is "properties" click that and it should bring up a window that among other things gives you the file size. If it is too big you need to use a photo resizing program to reduce the file size. You can also change the settings on your digital camera so it makes a smaller file size as well.
Good luck!