By default, the first Layer has the 'Transparency' property set to 'No', where as every new Layer has it set to 'Yes'.
So if the first Layer is above the others, then only the background would show.
Make sure this Layer is Layer 0 and is at the bottom of the list of Layers, or change it's Transparency.
It really would make things much quicker and easier if you uploaded your .capx.
Use a free service such as Dropbox, Google, Microsoft etc, save as a single file (.capx) and post the link here.
To get around you not having enough rep to post URLs, just add a space in the HTTP part of the URL.