This has happened to me couple of times: When trying to download the APK through the Developer Menu, downloading does not complete and the spinner just keeps on going. Even if I exit a project and open another project, the download continues to be in progress and I'm not able to start another one. There are no errors in these projects so it should not be a build problem from my side. Anyway, I would just like to know how to interrupt/cancel a download operation - any advice?