I'm writing an OS X application that depends on the ability to determine wireless signal strength, but I can't figure out what entitlements to use to sandbox it.

Whenever I use 

```
NSMutableArray *scanResults;
CWInterface *currentInterface = [CWInterface interface];
NSLog(@"currInterface: %@\n", currentInterface);
NSMutableDictionary *signalsDict = [[NSMutableDictionary alloc] init];
    NSError *err = nil;
    scanResults = [NSMutableSet setWithSet:[currentInterface scanForNetworksWithSSID:nil error:&err]];

```

I get the error `The operation couldn't be completed. (com.apple.coreWLAN.error error 1.)` despite having all entitlements checked in XCode. What entitlement(s) am I missing?

The CoreWLANWirelessManager sample project has the same problem.