After updating to xcode 4.6 and ios6.1, I get this new error \"\'objectType\' used as the name of the previous parameter rather than as part of the selector
It says that objectType is the name of the NSString object in your method and not part of the method name and it should not be used as objectType: (CLLocationCoordinate2D) objectCoordinate which normally denotes a part of method name.
Ideally you should change,
-(void) getAddress: (NSString *) objectType: (CLLocationCoordinate2D) objectCoordinate
to a more readable,
-(void) getAddress:(NSString *)objectType coordinate:(CLLocationCoordinate2D) objectCoordinate;
The above error can also be fixed by putting a space between objectType and next param in method definition(For eg:- -(void)getAddress:(NSString *)objectType : (CLLocationCoordinate2D)objectCoordinate). Note the space after objectType.
Update:
To answer the question in comments you can use the below line to suppress these warnings:
#pragma clang diagnostic ignored "-Wmissing-selector-name"
Add this in your pch file. I am not sure if this will work for your case where it comes from library but you can try it out. Check this clang-trunk for more details.