I wish there was some convenient way to read what Corona games print to the console when they are run.
This would really help to find rare, hard to catch bugs that only happen on the device, and never in the simulator.
The only other alternative is to write some custom logging for messages that Corona prints; I don't directly see a way to do this, though I haven't done any research on the subject as I think I'll be tackling these bugs next week, but I do think this is a simple modification that everyone will benefit from.
(to be more specific about what I had in mind: the error messages get printed to a file in the documents folder. I don't care much for how the log can be viewed - I don't mind implementing my own output for it - just as long as I can integrate a mechanism for doing so in my game and catch these non-reproducible bugs).