I realize that I'm running behind many others in this forum, but I just finished putting together the code for the "DoubleComponentPickerViewController" and am having a runtime error of "fatal error: unexpectedly found nil while unwrapping an Optional value" in the buttonPressed function.
I studied my code and it appears to be identical to the example code I downloaded from the Apress book site. Does anyone know what could be causing this problem? I haven't yet learned about the features of the debugger, so I'm a bit unqualified at the moment to figure out the problem.
Thanks in advance for your interest.