I opened both the NordicSemiDemo.xcodeproj and nRFDemo.xcodeproj in Xcode 5.0.2. When I try to run them (Product->Run), I get the splash screen in the simulator, but when the main menu appears, I get a "EXC_BAD_ACCESS" error.
My experience with Xcode and objective-C is quite low, so it's entirely possible I simply don't have something configured properly, and this is a really dumb question. Like I put the files into the wrong directory or missed an obvious configuration change or something.
Here's what comes up in Xcode when the simulator stops running:
NordicSemiDemo`-[WFHardwareControllerBTLE setCentralManager:] at WFHardwareControllerBTLE.m:21:
0xddfa4: pushl %ebp
0xddfa5: movl %esp, %ebp
0xddfa7: subl $24, %esp
0xddfaa: calll 0xddfaf ; -[WFHardwareControllerBTLE setCentralManager:] + 11 at WFHardwareControllerBTLE.m:21
0xddfaf: popl %eax
0xddfb0: movl 854401(%eax), %eax
0xddfb6: movl 16(%ebp), %ecx
0xddfb9: movl %ecx, 12(%esp)
0xddfbd: movl %eax, 8(%esp)
0xddfc1: movl 12(%ebp), %eax
0xddfc4: movl %eax, 4(%esp)
0xddfc8: movl 8(%ebp), %eax
0xddfcb: movl %eax, (%esp)
0xddfce: movl $0, 20(%esp)
0xddfd6: movl $0, 16(%esp)
0xddfde: calll 0x115640 ; symbol stub for: objc_setProperty
0xddfe3: addl $24, %esp
0xddfe6: popl %ebp
0xddfe7: ret
The third-to-last line is highlighted and gives the error "Thread 1:EXC_BAD_ACCESS (code=2, address=0x8)".