RuntimeError. Irritants: (The operation + cannot accept the arguments: , [nothing], [2] Bad arguments to +)
Note: You will not see another error reported for 5 seconds.
What does this mean?
It means you are probably attempting a Math operation ( + ) somewhere in your code and when it is initiated one of the values has not been set in your ios Project. The value for one of the values in the plus block was not yet given a value.