Are you trying to load @3x assets in your config.lua?
Interesting! I hadn’t thought of that. This is the config.lua excerpt:
imageSuffix = { ["@2x"] = 1.5, ["@3x"] = 2.5, }
At this time I think we are only providing @2x and @4x assets. If you can adjust your app accordingly, then you can work around the problem. I’ll see if we are planning @3x assets.
Rob