setLocation throws -[__NSDictionaryM setLocation:]: unrecognized selector sent to instance 0x15e7b8f0

[eighteight]

I have a valid location object, however, when trying to set it in the dictionary, the subj error is thrown.

Here's my code

NSMutableDictionary *metadata = [[NSMutableDictionary alloc] initWithDictionary:videoCamera->exif ];

if (self->location) {
    [metadata setLocation:location];
}

Thanks.

[eighteight]

If, instead of the initWithDictionary I use

NSMutableDictionary *metadata = [[NSMutableDictionary alloc] initWithInfoFromImagePicker:videoCamera->exif ];

Then the same exception is thrown on the initialization above.