So switch your Real Studio copy on Mac OS X to mark applications to get 10.6 behavior, you can use this line in terminal:
defaults write com.realsoftware.realstudio "Mac SDK Version" -string "10.6"
Update: This also affects MBQueryMBS.
Warning: This is a global setting which affects all your projects. This can have bad side effects, especially in Cocoa project where the framework expects you to use the default version. Default SDK for 2012r2 Cocoa is 10.7, so the plugin functions should work fine there without you use this setting.