"unhandledError" Errors - stacktrace from device is completely useless for debugging

Other
#1

When I handle unhandled errors in my game, in the simulator all works well. 
But in the device, I get neither the function names nor the line numbers

This is my errorListener function

    local function      errorListener( event )         for i,v in pairs(event) do print(i,v) end return true     end     Runtime:addEventListener("unhandledError", errorListener)  

In the device I just get the following.

errorMessage: ?:0: attempt to index upvalue '?' (a nil value) stackTrace: stack traceback: [C]: ? ?: in function '?' ?: in function '?' ?: in function \<?:216\> ?: in function \<?:218\> name: unhandledError &nbsp;

which is pretty useless for debugging. 

Any way I can get the actual function names?

#2

Bumping!
No one encountered this in their device builds?

#3

Bumping again! 
Guys???

#4

Bumping!
No one encountered this in their device builds?

#5

Bumping again! 
Guys???