I have a game that works fine in the simulator. I have also exported it to an Android device and it also works just fine.
However, I just added to TestFlight in iTunes Connect and installed it on an iOS device. Now it is giving me
bad argument #2 to 'newImageSheet' (for single frame size, 'options' table must contain valid 'width' and 'height' values)
I've double checked the size of the images, the case, the path, and everything else I can think of.
Any ideas as to why I would only get this error on iOS devices and not on Android devices or on the simulator?