Have successfully downloaded trails to my computer but when map source opens it up it is blank? The Indiana and surrounding states version. I also had the same problem when I tried to load trails for TN and NC. The topo maps do just fine but I'd like to resolve the trails issue I'm having.
If you are refering to my trails overlay map, the issue is that an overview map can not be made for an overlay/transparent map - or maybe I just have not found the method to do so.
If you zoom in far enough, the data will show, however, this usually means you have little to no reference to where you are - except for the coordinates.