Emulators are not a platform that we test in development. We test both Android and iOS. Due to this, when changes are made we do not know when something breaks in an unsupported platform. We also do not officially support Bluestacks. If there is an issue with DomiNations, we highly suggest contacting Bluestacks support. In many cases they can assist with these types of issues. You may also want to try uninstalling and then reinstalling DomiNations.