I created a map for use in Collector and it contains a downloadable ESRI basemap, one feature service, and one tile layer. When I attempt to download the map to my i-pad I get this error: “Map download Failed. Unable to download the map. Invalid Levels.” If I remove the tile layer the map downloads fine, so this leads me to believe the tile layer is the problem. When I published the tiles I checked the box “Allow clients to export cache tiles.” The weird thing is that this worked just a few weeks ago. Has anyone else seen this??