This is a generic error that can be caused by several factors. The most common problem is that there was an error resizing the image. Most of the images displayed on your Bombplates site are automatically resized to fit within your design. Particularly large images (e.g. desktop wallpapers) cannot be resized automatically and will throw this error. Try decreasing the size of the image using an image editor such as Paint or Photoshop and re-uploading it that way.